Date   

Re: 9" Model C Leadscrew in the UK

benjithestupiddog@...
 

Yeah, I have looked into it but best price really isn't that great, last price I got was over £100 delivered, only just a bit less than trying to import one from the US.

Plus, whilst I have a lathe, I'm not a great machinist and only have a foot or so out the back of the spindle before I hit a wall, so it's really not something I would be comfortable attempting.

But thanks for taking the time to reply



Re: 9" Model C Leadscrew in the UK

Andrei
 

Adam, you can always buy an acme thread lead screw and cut it to size. They start at reasonable prices and get more and more expensive depending on length, diameter, and method of production.


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of benjithestupiddog via groups.io <benjithestupiddog@...>
Sent: Friday, July 9, 2021 11:28 AM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: [SouthBendLathe] 9" Model C Leadscrew in the UK
 
Hi all,

Longest of long shots, but does anyone have a lead on a SB9 model C leadscrew in the UK.

Obviously making one is an option, but I sadly I have neither the space in tiny shed, or the skill to get around that (or in general), plus acme thread bar is really expensive this side of the pond, I couldn't find it for less than used parts that had previously sold on ebay.

I have been thinking of moving my 9a on and refurbing the 80% complete 9c I bought to scavenge the back gear from, I have been waiting for one to pop up but it just isn't happening and I'm kind of dead in the water without it. 

Thanks either way

Adam


Re: 9" Model C Leadscrew in the UK

Andrei
 

Adam, you can always buy an acme thread lead screw and cut it to size. They start at reasonable prices and get more and more expensive depending on length, diameter, and method of production.


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of benjithestupiddog via groups.io <benjithestupiddog@...>
Sent: Friday, July 9, 2021 11:28 AM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: [SouthBendLathe] 9" Model C Leadscrew in the UK
 
Hi all,

Longest of long shots, but does anyone have a lead on a SB9 model C leadscrew in the UK.

Obviously making one is an option, but I sadly I have neither the space in tiny shed, or the skill to get around that (or in general), plus acme thread bar is really expensive this side of the pond, I couldn't find it for less than used parts that had previously sold on ebay.

I have been thinking of moving my 9a on and refurbing the 80% complete 9c I bought to scavenge the back gear from, I have been waiting for one to pop up but it just isn't happening and I'm kind of dead in the water without it. 

Thanks either way

Adam


9" Model C Leadscrew in the UK

benjithestupiddog@...
 

Hi all,

Longest of long shots, but does anyone have a lead on a SB9 model C leadscrew in the UK.

Obviously making one is an option, but I sadly I have neither the space in tiny shed, or the skill to get around that (or in general), plus acme thread bar is really expensive this side of the pond, I couldn't find it for less than used parts that had previously sold on ebay.

I have been thinking of moving my 9a on and refurbing the 80% complete 9c I bought to scavenge the back gear from, I have been waiting for one to pop up but it just isn't happening and I'm kind of dead in the water without it. 

Thanks either way

Adam


Re: Cutting Off / Parting

Ondrej Krejci
 

Greetings,

The double bevel allows it to be used in right and left hand positions, no need to sharpen both ends like with Armstrong holders.
Pertaining to lantern tool posts, I have yet to see any on lathes in an industrial setting.  They are flimsy and seem to be an American affliction.

Cheers,


OK


Re: Cutting Off / Parting

mike allen
 

        all he has to do is file/cut a groove at the top of the parting tool holder , or I guess a guy could shim it out too .

        animal

On 7/1/2021 11:00 AM, Bill in OKC too via groups.io wrote:
Thanks! I've added them to my suppliers bookmarks. I wonder if the P-type cutoff tools would work in Gerald's tool holder? They're the "T" shaped cutoff blades. Lots easier to find.

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Thursday, July 1, 2021, 12:28:13 PM CDT, mike allen <animal@...> wrote:


            https://www.msdiscounttool.com/catalog/index.php?cPath=4224

           https://www.westtool.com/search#/catalogue/group/6100?kw=hss%20%20cut%20off%20blade

            I have bought from both of these folks & would buy again

            animal

On 7/1/2021 9:57 AM, Bill in OKC too via groups.io wrote:
Interesting. While it says "double-bevel" in the title, the description describes it as a "parallel" blade type. I don't need that style, so I'm not going to risk it, but the cost is better, if not what I would call good.

And I wouldn't scrap a lantern tool post, since there are times when it will work better (for some things) than a QCTP. You should have both. "That there funny looking nail has a spiral groove in it's side. I wonder what that's for?"

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Thursday, July 1, 2021, 11:28:13 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Howdy,

I wrote about scrapping obsolete tooling and someone mentioned scrapping old lathes I presume, but yes, those too, eventually, but first those hideous lantern tool posts.
As for the not-so-mysterious cut-off blade:  it is the 1/2" size, double bevelled 5° at the edges, viz https://www.mscdirect.com/product/details/00309427 .

Enjoy,


OK
On Thursday, July 1, 2021, 10:53:27 AM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:


You buying?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Thursday, July 1, 2021, 03:10:33 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John<reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From:SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

Inline
                                                          image

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

Bill in OKC too
 

Thanks! I've added them to my suppliers bookmarks. I wonder if the P-type cutoff tools would work in Gerald's tool holder? They're the "T" shaped cutoff blades. Lots easier to find.

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Thursday, July 1, 2021, 12:28:13 PM CDT, mike allen <animal@...> wrote:


            https://www.msdiscounttool.com/catalog/index.php?cPath=4224

           https://www.westtool.com/search#/catalogue/group/6100?kw=hss%20%20cut%20off%20blade

            I have bought from both of these folks & would buy again

            animal

On 7/1/2021 9:57 AM, Bill in OKC too via groups.io wrote:
Interesting. While it says "double-bevel" in the title, the description describes it as a "parallel" blade type. I don't need that style, so I'm not going to risk it, but the cost is better, if not what I would call good.

And I wouldn't scrap a lantern tool post, since there are times when it will work better (for some things) than a QCTP. You should have both. "That there funny looking nail has a spiral groove in it's side. I wonder what that's for?"

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Thursday, July 1, 2021, 11:28:13 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Howdy,

I wrote about scrapping obsolete tooling and someone mentioned scrapping old lathes I presume, but yes, those too, eventually, but first those hideous lantern tool posts.
As for the not-so-mysterious cut-off blade:  it is the 1/2" size, double bevelled 5° at the edges, viz https://www.mscdirect.com/product/details/00309427 .

Enjoy,


OK
On Thursday, July 1, 2021, 10:53:27 AM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:


You buying?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Thursday, July 1, 2021, 03:10:33 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John<reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From:SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

Inline                                                          image

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

mike allen
 

        if a guy/gal wants to make it work , I have seen parting tool holders with a groove filed, milled or what ever to use the T-type parting tool .

        animal

On 7/1/2021 10:56 AM, rlm_mcv via groups.io wrote:
Those are for a "P" style which is "T" in shape.  Not the correct profile for the old obsolete Williams and Armstrong holders.  I don't think they used what would be called a double bevel as all the bevel clearance is on one side of the Williams/Armstrong tooling.  That is why there different part numbers for right and left versions of the tool steel. Or required sharpening the other end of the steel to use in the opposite direction holder. 
The Johnson grind also mentioned previously is not what was supplied by the originally by the manufacturers either.

These alternate shapes that have been found might "get by", but are not what the holders were designed for.

On Thursday, July 1, 2021, 12:28:14 PM CDT, mike allen <animal@...> wrote:


            https://www.msdiscounttool.com/catalog/index.php?cPath=4224

            https://www.westtool.com/search#/catalogue/group/6100?kw=hss%20%20cut%20off%20blade

            I have bought from both of these folks & would buy again

            animal

On 7/1/2021 9:57 AM, Bill in OKC too via groups.io wrote:
Interesting. While it says "double-bevel" in the title, the description describes it as a "parallel" blade type. I don't need that style, so I'm not going to risk it, but the cost is better, if not what I would call good.

And I wouldn't scrap a lantern tool post, since there are times when it will work better (for some things) than a QCTP. You should have both. "That there funny looking nail has a spiral groove in it's side. I wonder what that's for?"

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Thursday, July 1, 2021, 11:28:13 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Howdy,

I wrote about scrapping obsolete tooling and someone mentioned scrapping old lathes I presume, but yes, those too, eventually, but first those hideous lantern tool posts.
As for the not-so-mysterious cut-off blade:  it is the 1/2" size, double bevelled 5° at the edges, viz https://www.mscdirect.com/product/details/00309427 .

Enjoy,


OK
On Thursday, July 1, 2021, 10:53:27 AM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:


You buying?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Thursday, July 1, 2021, 03:10:33 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John <reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline
                                                          image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline
                                                          image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

rlm_mcv
 

Those are for a "P" style which is "T" in shape.  Not the correct profile for the old obsolete Williams and Armstrong holders.  I don't think they used what would be called a double bevel as all the bevel clearance is on one side of the Williams/Armstrong tooling.  That is why there different part numbers for right and left versions of the tool steel. Or required sharpening the other end of the steel to use in the opposite direction holder. 
The Johnson grind also mentioned previously is not what was supplied by the originally by the manufacturers either.

These alternate shapes that have been found might "get by", but are not what the holders were designed for.

On Thursday, July 1, 2021, 12:28:14 PM CDT, mike allen <animal@...> wrote:


            https://www.msdiscounttool.com/catalog/index.php?cPath=4224

            https://www.westtool.com/search#/catalogue/group/6100?kw=hss%20%20cut%20off%20blade

            I have bought from both of these folks & would buy again

            animal

On 7/1/2021 9:57 AM, Bill in OKC too via groups.io wrote:
Interesting. While it says "double-bevel" in the title, the description describes it as a "parallel" blade type. I don't need that style, so I'm not going to risk it, but the cost is better, if not what I would call good.

And I wouldn't scrap a lantern tool post, since there are times when it will work better (for some things) than a QCTP. You should have both. "That there funny looking nail has a spiral groove in it's side. I wonder what that's for?"

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Thursday, July 1, 2021, 11:28:13 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Howdy,

I wrote about scrapping obsolete tooling and someone mentioned scrapping old lathes I presume, but yes, those too, eventually, but first those hideous lantern tool posts.
As for the not-so-mysterious cut-off blade:  it is the 1/2" size, double bevelled 5° at the edges, viz https://www.mscdirect.com/product/details/00309427 .

Enjoy,


OK
On Thursday, July 1, 2021, 10:53:27 AM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:


You buying?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Thursday, July 1, 2021, 03:10:33 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John <reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

mike allen
 

            https://www.msdiscounttool.com/catalog/index.php?cPath=4224

            https://www.westtool.com/search#/catalogue/group/6100?kw=hss%20%20cut%20off%20blade

            I have bought from both of these folks & would buy again

            animal

On 7/1/2021 9:57 AM, Bill in OKC too via groups.io wrote:
Interesting. While it says "double-bevel" in the title, the description describes it as a "parallel" blade type. I don't need that style, so I'm not going to risk it, but the cost is better, if not what I would call good.

And I wouldn't scrap a lantern tool post, since there are times when it will work better (for some things) than a QCTP. You should have both. "That there funny looking nail has a spiral groove in it's side. I wonder what that's for?"

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Thursday, July 1, 2021, 11:28:13 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Howdy,

I wrote about scrapping obsolete tooling and someone mentioned scrapping old lathes I presume, but yes, those too, eventually, but first those hideous lantern tool posts.
As for the not-so-mysterious cut-off blade:  it is the 1/2" size, double bevelled 5° at the edges, viz https://www.mscdirect.com/product/details/00309427 .

Enjoy,


OK
On Thursday, July 1, 2021, 10:53:27 AM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:


You buying?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Thursday, July 1, 2021, 03:10:33 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John <reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

Inline
                                                          image

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

Bill in OKC too
 

Interesting. While it says "double-bevel" in the title, the description describes it as a "parallel" blade type. I don't need that style, so I'm not going to risk it, but the cost is better, if not what I would call good.

And I wouldn't scrap a lantern tool post, since there are times when it will work better (for some things) than a QCTP. You should have both. "That there funny looking nail has a spiral groove in it's side. I wonder what that's for?"

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)




On Thursday, July 1, 2021, 11:28:13 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Howdy,

I wrote about scrapping obsolete tooling and someone mentioned scrapping old lathes I presume, but yes, those too, eventually, but first those hideous lantern tool posts.
As for the not-so-mysterious cut-off blade:  it is the 1/2" size, double bevelled 5° at the edges, viz https://www.mscdirect.com/product/details/00309427 .

Enjoy,


OK
On Thursday, July 1, 2021, 10:53:27 AM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:


You buying?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Thursday, July 1, 2021, 03:10:33 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John <reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

Inline                      image

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline                                                          image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline                                                          image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

Ondrej Krejci
 

Howdy,

I wrote about scrapping obsolete tooling and someone mentioned scrapping old lathes I presume, but yes, those too, eventually, but first those hideous lantern tool posts.
As for the not-so-mysterious cut-off blade:  it is the 1/2" size, double bevelled 5° at the edges, viz https://www.mscdirect.com/product/details/00309427 .

Enjoy,


OK

On Thursday, July 1, 2021, 10:53:27 AM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:


You buying?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Thursday, July 1, 2021, 03:10:33 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John <reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

Inline                      image

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline                                                          image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline                                                          image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

Bill in OKC too
 

You buying?

Bill in OKC

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Thursday, July 1, 2021, 03:10:33 AM CDT, Ondrej Krejci via groups.io <okrejci@...> wrote:


Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John <reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

Inline                      image

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline                                                          image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline                                                          image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

eddie.draper@btinternet.com
 

What, you mean things like old lathes?


Eddie




------ Original Message ------
From: "Ondrej Krejci via groups.io" <okrejci@...>
To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io>
Sent: Thursday, 1 Jul, 21 At 09:10
Subject: Re: [SouthBendLathe] Cutting Off / Parting

Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John <reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

$ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

John,

I assume "not rectangular" implies wider at eh top of the blade than the bottom. Could you check the dimensions of the blades you have?

Thanks,

Greg

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller? If so what does the groove in your holder measure for height?

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625.

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

Looking online I find no suppliers of 7/16" but lots of 1/2". With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

Agreed, but 1/2-inch won't fit in the tool in front of me. I need to believe the tool in hand over a Armstrong and Williams catalog.

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

I would believe the Williams and Armstrong catalogues before E Bay

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

It uses 7/16. See here

Typos are courtesy of autocorrect.


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade. These
usually come about 4" to 4-1/2" long. There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

Ondrej Krejci
 

Greetings,

May be it´s time to scrap obsolete tooling and join this century?

Best wishes,


OK

On Thursday, July 1, 2021, 12:58:32 AM EDT, John <reproturn@...> wrote:


I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

Inline                      image

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline                                                          image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline                                                          image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

John
 

I’m in Australia and the price of parting tool blade here is outrageous, but not US$56!! OK it is M34 but really…..?

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of mike allen
Sent: 01 July 2021 10:46
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:

On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

John
 

Close but the Armstrong blades I have are not hollow ground on the side. I also have blades by other makers that are the same as the Armstrong.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 01 July 2021 05:18
To: southbendlathe@groups.io; SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

 

Inline image

 

On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:

 

 

OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.

On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

G K
 

I also thought $56 was a bit for my abilities, at this time.   sanded (1-inch belt sander) a 5 degree edge (cut a maple jig in the table saw) on a carbide tipped cut-off tool that was 0.500.  Sanded it down to 0.450 and it fits nicely.  The tightening cam is quite forgiving.  Only time will tell if all is well.

Thanks for everyone's input.






On Wednesday, June 30, 2021, 08:24:42 PM CDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote:


Sounds like it's precision-ground to a complex shape & angles. I think I will have to make do with the the HF $4/packet rectangular blades that fit my parting tool holders for the QCTP's for my lathes. But if he wants one to fit his tool holder he can now buy or make one with the info he now has.

If I owned a surface grinder I'd be tempted to make one. And I do want a surface grinder, anyway. YMMV

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Wednesday, June 30, 2021, 07:46:12 PM CDT, mike allen <animal@...> wrote:


        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:
On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:


Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

Inline                       image


On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:


OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline                                                           image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline                                                           image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.


On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

Bill in OKC too
 

Sounds like it's precision-ground to a complex shape & angles. I think I will have to make do with the the HF $4/packet rectangular blades that fit my parting tool holders for the QCTP's for my lathes. But if he wants one to fit his tool holder he can now buy or make one with the info he now has.

If I owned a surface grinder I'd be tempted to make one. And I do want a surface grinder, anyway. YMMV

William R. Meyers, MSgt, USAF(Ret.)


A human being should be able to change a diaper, plan an invasion,
butcher a hog, conn a ship, design a building, write a sonnet, balance
accounts, build a wall, set a bone, comfort the dying, take orders,
give orders, cooperate, act alone, solve equations, analyze a new
problem, pitch manure, program a computer, cook a tasty meal, fight
efficiently, die gallantly. Specialization is for insects.
LAZARUS LONG (Robert A. Heinlein)





On Wednesday, June 30, 2021, 07:46:12 PM CDT, mike allen <animal@...> wrote:


        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:
On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:


Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.

Inline                       image


On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:


OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

I do not have any 1/2" cuttoff steel but a piece of Armstrong brand 5/8" I have only measures 0.59 not 0.625. 

 

On Tuesday, June 29, 2021, 10:16:10 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Looking online I find no suppliers of 7/16" but lots of 1/2".  With the manufactures listing the product as using 1/2" also makes it seem as something is afoul here.

 

On Tuesday, June 29, 2021, 10:02:43 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Agreed, but 1/2-inch won't fit in the tool in front of me.  I need to believe the tool in hand over a Armstrong and Williams catalog.

 

 

 

On Tuesday, June 29, 2021, 09:59:01 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

Inline                                                           image

I would believe the Williams and Armstrong catalogues before E Bay

 

On Tuesday, June 29, 2021, 9:52:09 PM CDT, Andrei <calciu1@...> wrote:

 

 

It uses 7/16. See here

Typos are courtesy of autocorrect.

 


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of rlm_mcv via groups.io <rlm_mcv@...>
Sent: Tuesday, June 29, 2021 10:42:37 PM
To:
SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

Inline                                                           image

 

 

On Tuesday, June 29, 2021, 9:36:34 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:

 

 

Unfortunately, no go with 1/2-inch. When I measure the opening I get 0.445 to 0.486. Maybe 7/16-inch. Can’t find those anywhere.


On Tuesday, June 29, 2021, 8:52 PM, wlw19958 <wlw-19958@...> wrote:

Hi There,

As far as I know, the 29 uses a 3/32" x 1/2" cut-off blade.  These
usually come about 4" to 4-1/2" long.  There are lots of them on eBay.

Good Luck!
-Blue Chips-
Webb


Re: Cutting Off / Parting

mike allen
 

        $ 56 . for a single parting tool ? That's @ half of what I paid for my QCTP with 5 tool holders . Am I missing something here ?

        animal

On 6/30/2021 1:09 PM, rlm_mcv via groups.io wrote:
On Wednesday, June 30, 2021, 2:18:05 PM CDT, G K via groups.io <bug_hunter2000@...> wrote:


Looks like it is called a "Johnson Style, Hollow Ground Cut Off Blade" No idea if the 1/2-inch blade is really 1/2-inch. or 12mm.




On Wednesday, June 30, 2021, 01:49:59 AM CDT, John <reproturn@...> wrote:


OK I’m back.

I have an Armstrong No.20 tool and an Armstrong ½ inch blade.

Too hard to escribe the blade profile so I took pic – the blade in the No.20 tool has same profile.

Never tried to post a pic before so I hope it comes through.

 

The blade measure 12mm top to bottom, 2.25mm wide at the top and 1.55mm wide at the bottom.

Sorry if you likes inches but I find metric easier to use on the vernier.

The bottom is not flat but has a bevel to match the bevel in the tool holder. Likewise the top is only flat for about half the width then has a low bevel. This allows the blade to engage firmly with the cam lock on the tool.

Cheers

John B

 

 

 

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of G K via groups.io
Sent: 30 June 2021 14:06
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting

 

John,

 

I assume "not rectangular" implies wider at eh top of the blade than the bottom.  Could you check the dimensions of the blades you have?

 

Thanks,

 

Greg

 

On Tuesday, June 29, 2021, 10:56:43 PM CDT, rlm_mcv via groups.io <rlm_mcv@...> wrote:

 

 

John do your original 1/2" measure the full 1/2" or are they like my 5/8" a bit smaller?   If so what does the groove in your holder measure for height?

 

On Tuesday, June 29, 2021, 10:50:38 PM CDT, John <reproturn@...> wrote:

 

 

I have some original blades. They were not the regular rectangular kind that is mostly sold today. Armstrong and Williams made a tapered profile blade. If you look closely at the Williams catalogue extract you can see this.

Cheers

John B

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of rlm_mcv via groups.io
Sent: 30 June 2021 13:45
To:
SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] Cutting Off / Parting