follow up to my follow up


E A
 

So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see?
Erik A


Davis Johnson
 

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.


A previous owner added a mark in front, but they got it about 2 degrees off.


On 11/15/22 14:20, E A wrote:

So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see?
Erik A


Andrei
 

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere. 

As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...>
Sent: Tuesday, November 15, 2022 2:51 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.


A previous owner added a mark in front, but they got it about 2 degrees off.


On 11/15/22 14:20, E A wrote:

So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see?
Erik A


eddie.draper@btinternet.com
 

That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie




------ Original Message ------
From: "Andrei" <calciu1@...>
To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io>
Sent: Tuesday, 15 Nov, 22 At 20:24
Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...>
Sent: Tuesday, November 15, 2022 2:51 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.


A previous owner added a mark in front, but they got it about 2 degrees off.


On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see?
Erik A


Andrei
 

Yup. That is why 18" is probably safer. Can't fit anything there that would not interfere with the lathe. 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of eddie.draper@... via groups.io <eddie.draper@...>
Sent: Tuesday, November 15, 2022 4:10 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie




------ Original Message ------
From: "Andrei" <calciu1@...>
To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io>
Sent: Tuesday, 15 Nov, 22 At 20:24
Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...>
Sent: Tuesday, November 15, 2022 2:51 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.


A previous owner added a mark in front, but they got it about 2 degrees off.


On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see?
Erik A


Bill in OKC too
 

Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper@...> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie




------ Original Message ------
From: "Andrei" <calciu1@...>
To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io>
Sent: Tuesday, 15 Nov, 22 At 20:24
Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...>
Sent: Tuesday, November 15, 2022 2:51 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.


A previous owner added a mark in front, but they got it about 2 degrees off.


On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see?
Erik A


E A
 

All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers@...>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper@...> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie




------ Original Message ------
From: "Andrei" <calciu1@...>
To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io>
Sent: Tuesday, 15 Nov, 22 At 20:24
Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...>
Sent: Tuesday, November 15, 2022 2:51 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.


A previous owner added a mark in front, but they got it about 2 degrees off.


On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see?
Erik A


m. allan noah
 

The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

allan


On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:
All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie




------ Original Message ------
From: "Andrei" <calciu1@...>
To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io>
Sent: Tuesday, 15 Nov, 22 At 20:24
Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...>
Sent: Tuesday, November 15, 2022 2:51 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.


A previous owner added a mark in front, but they got it about 2 degrees off.


On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see?
Erik A



--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


Tyler
 

Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

- Set the compound at the approximate angle with the markings.

- Mount an indicator on the compound perpendicular to the work, and on center height.

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.






On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:


The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

allan


On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:
All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie




------ Original Message ------
From: "Andrei" <calciu1@...>
To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io>
Sent: Tuesday, 15 Nov, 22 At 20:24
Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...>
Sent: Tuesday, November 15, 2022 2:51 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.


A previous owner added a mark in front, but they got it about 2 degrees off.


On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see?
Erik A



--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


Jim_B
 


If you have an existing taper, and you can mount it true to the bed, then, using a DI you can set the compound to match the existing taper exactly (Well very closely.)

In the picture, I am offsetting the tailstock, which has a small boring head inserted, to match an existing B&S taper. 



Jim B.

Dr. James A Benjamin
1629 Riverview Drive. Apt 416
Deerfield Beach, FL 33441




On Nov 16, 2022, at 7:42 AM, E A <b-arch@...> wrote:

All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A


_._,_._,_


--
Jim B


mike allen
 

     It's been quit some time since I turned a taper & I don't have my lathe in front ot me , but I'm   Take it to 90 deg & back it off 5 deg " ( 85 deg )  ?

        animal


        animal

On 11/16/2022 4:42 AM, E A wrote:

All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers@...>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper@...> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie


------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up
General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.
As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A


mike allen
 

Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

- Set the compound at the approximate angle with the markings.

- Mount an indicator on the compound perpendicular to the work, and on center height.

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.






On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:


The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

allan

On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:
All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie


------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up
General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.
As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A


--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


Rogan Creswick
 

I wish the south bends had more flat (and machined) surfaces on the cross slide and compound for things like this.

It would be convenient to use an angle block / 1-2-3 block and run up against the chuck to set an angle like this, but there are few flat surfaces to set things against.  I imagine you could make something that slid into the toolpost mounting T-Slot and registered against the machined sides of that (they are *probably* parallel to the dovetails...)

I was considering the other night the thought of machining / fabricating a cross slide with a toolholder--no compound--in order to have more fixturing options, greater rigidity, and machined surfaces for setups like this.

On Wed, Nov 16, 2022 at 10:13 AM mike allen <animal@...> wrote:

    I forgot to put the protractor in my last mail . set it on your chuck & the compound .

https://www.amazon.com/VOLCANOES-CLUB-Digital-Angle-Finder-Protractor/dp/B09PN8CQH7/ref=sr_1_2_sspa?gclid=Cj0KCQiAsdKbBhDHARIsANJ6-jdsmSKC5KBsU8eITCCuqNdZ25CMya_6_N4pok28hMiXVaeDRN3PRHoaAsNiEALw_wcB&hvadid=409948644601&hvdev=c&hvlocphy=9032186&hvnetw=g&hvqmt=e&hvrand=17812276858912524318&hvtargid=kwd-1126019736&hydadcr=1638_11256579&keywords=adjustable+protractor&qid=1668621961&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

        animal

On 11/16/2022 7:33 AM, Tyler via groups.io wrote:
Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

- Set the compound at the approximate angle with the markings.

- Mount an indicator on the compound perpendicular to the work, and on center height.

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.






On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:


The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

allan

On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:
All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie


------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up
General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.
As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A


--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


ww_big_al
 

MLA Tools has a cast kit to do this.

http://mlatoolbox.com/S-4382.html

 

Paula on practical machinist forum did a excellent writeup on making it.

https://www.practicalmachinist.com/forum/threads/machining-a-t-slotted-cross-slide.177054/

 

Al

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of Rogan Creswick
Sent: Wednesday, November 16, 2022 6:48 PM
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] follow up to my follow up

 

I wish the south bends had more flat (and machined) surfaces on the cross slide and compound for things like this.

 

It would be convenient to use an angle block / 1-2-3 block and run up against the chuck to set an angle like this, but there are few flat surfaces to set things against.  I imagine you could make something that slid into the toolpost mounting T-Slot and registered against the machined sides of that (they are *probably* parallel to the dovetails...)

 

I was considering the other night the thought of machining / fabricating a cross slide with a toolholder--no compound--in order to have more fixturing options, greater rigidity, and machined surfaces for setups like this.

 

On Wed, Nov 16, 2022 at 10:13 AM mike allen <animal@...> wrote:

    I forgot to put the protractor in my last mail . set it on your chuck & the compound .

https://www.amazon.com/VOLCANOES-CLUB-Digital-Angle-Finder-Protractor/dp/B09PN8CQH7/ref=sr_1_2_sspa?gclid=Cj0KCQiAsdKbBhDHARIsANJ6-jdsmSKC5KBsU8eITCCuqNdZ25CMya_6_N4pok28hMiXVaeDRN3PRHoaAsNiEALw_wcB&hvadid=409948644601&hvdev=c&hvlocphy=9032186&hvnetw=g&hvqmt=e&hvrand=17812276858912524318&hvtargid=kwd-1126019736&hydadcr=1638_11256579&keywords=adjustable+protractor&qid=1668621961&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

        animal

On 11/16/2022 7:33 AM, Tyler via groups.io wrote:

Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

 

- Set the compound at the approximate angle with the markings.

 

- Mount an indicator on the compound perpendicular to the work, and on center height.

 

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

 

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

 

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.

 

 

 

 

 

 

On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:

 

 

The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

 

allan

 

On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:

All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?

Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.

What am I missing?
Erik A


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

 

Hmmm. I resemble that remark.  :)

 

Bill in OKC 

 

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

 

Aphorisms to live by:

Good judgement comes from experience. Experience comes from bad judgement. 

SEMPER GUMBY!

Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better

 

 

 

On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:

 

 

That's 30" you can fill with antiques or junque. Seems to be what happens to me.

 

Eddie



------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:

So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.

My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A



--

"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


Rogan Creswick
 

Oh, that's interesting!  Seems like a reasonable price, too. Especially if the T-slots are already milled.

The other thing I'd like to get out of this change is space to attach a DRO.

On Wed, Nov 16, 2022 at 3:59 PM ww_big_al <arknack@...> wrote:

MLA Tools has a cast kit to do this.

http://mlatoolbox.com/S-4382.html

 

Paula on practical machinist forum did a excellent writeup on making it.

https://www.practicalmachinist.com/forum/threads/machining-a-t-slotted-cross-slide.177054/

 

Al

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of Rogan Creswick
Sent: Wednesday, November 16, 2022 6:48 PM
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] follow up to my follow up

 

I wish the south bends had more flat (and machined) surfaces on the cross slide and compound for things like this.

 

It would be convenient to use an angle block / 1-2-3 block and run up against the chuck to set an angle like this, but there are few flat surfaces to set things against.  I imagine you could make something that slid into the toolpost mounting T-Slot and registered against the machined sides of that (they are *probably* parallel to the dovetails...)

 

I was considering the other night the thought of machining / fabricating a cross slide with a toolholder--no compound--in order to have more fixturing options, greater rigidity, and machined surfaces for setups like this.

 

On Wed, Nov 16, 2022 at 10:13 AM mike allen <animal@...> wrote:

    I forgot to put the protractor in my last mail . set it on your chuck & the compound .

https://www.amazon.com/VOLCANOES-CLUB-Digital-Angle-Finder-Protractor/dp/B09PN8CQH7/ref=sr_1_2_sspa?gclid=Cj0KCQiAsdKbBhDHARIsANJ6-jdsmSKC5KBsU8eITCCuqNdZ25CMya_6_N4pok28hMiXVaeDRN3PRHoaAsNiEALw_wcB&hvadid=409948644601&hvdev=c&hvlocphy=9032186&hvnetw=g&hvqmt=e&hvrand=17812276858912524318&hvtargid=kwd-1126019736&hydadcr=1638_11256579&keywords=adjustable+protractor&qid=1668621961&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

        animal

On 11/16/2022 7:33 AM, Tyler via groups.io wrote:

Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

 

- Set the compound at the approximate angle with the markings.

 

- Mount an indicator on the compound perpendicular to the work, and on center height.

 

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

 

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

 

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.

 

 

 

 

 

 

On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:

 

 

The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

 

allan

 

On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:

All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?

Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.

What am I missing?
Erik A


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

 

Hmmm. I resemble that remark.  :)

 

Bill in OKC 

 

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

 

Aphorisms to live by:

Good judgement comes from experience. Experience comes from bad judgement. 

SEMPER GUMBY!

Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better

 

 

 

On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:

 

 

That's 30" you can fill with antiques or junque. Seems to be what happens to me.

 

Eddie



------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:

So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.

My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A



--

"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


mike allen
 

        The dovetail is the elephant in the room . From looking at them its a pretty simple one to make " if " you have the ability to cut dovetails .

        animal


On 11/16/2022 4:31 PM, Rogan Creswick wrote:

Oh, that's interesting!  Seems like a reasonable price, too. Especially if the T-slots are already milled.

The other thing I'd like to get out of this change is space to attach a DRO.

On Wed, Nov 16, 2022 at 3:59 PM ww_big_al <arknack@...> wrote:

MLA Tools has a cast kit to do this.

http://mlatoolbox.com/S-4382.html

 

Paula on practical machinist forum did a excellent writeup on making it.

https://www.practicalmachinist.com/forum/threads/machining-a-t-slotted-cross-slide.177054/

 

Al

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of Rogan Creswick
Sent: Wednesday, November 16, 2022 6:48 PM
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] follow up to my follow up

 

I wish the south bends had more flat (and machined) surfaces on the cross slide and compound for things like this.

 

It would be convenient to use an angle block / 1-2-3 block and run up against the chuck to set an angle like this, but there are few flat surfaces to set things against.  I imagine you could make something that slid into the toolpost mounting T-Slot and registered against the machined sides of that (they are *probably* parallel to the dovetails...)

 

I was considering the other night the thought of machining / fabricating a cross slide with a toolholder--no compound--in order to have more fixturing options, greater rigidity, and machined surfaces for setups like this.

 

On Wed, Nov 16, 2022 at 10:13 AM mike allen <animal@...> wrote:

    I forgot to put the protractor in my last mail . set it on your chuck & the compound .

https://www.amazon.com/VOLCANOES-CLUB-Digital-Angle-Finder-Protractor/dp/B09PN8CQH7/ref=sr_1_2_sspa?gclid=Cj0KCQiAsdKbBhDHARIsANJ6-jdsmSKC5KBsU8eITCCuqNdZ25CMya_6_N4pok28hMiXVaeDRN3PRHoaAsNiEALw_wcB&hvadid=409948644601&hvdev=c&hvlocphy=9032186&hvnetw=g&hvqmt=e&hvrand=17812276858912524318&hvtargid=kwd-1126019736&hydadcr=1638_11256579&keywords=adjustable+protractor&qid=1668621961&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

        animal

On 11/16/2022 7:33 AM, Tyler via groups.io wrote:

Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

 

- Set the compound at the approximate angle with the markings.

 

- Mount an indicator on the compound perpendicular to the work, and on center height.

 

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

 

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

 

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.

 

 

 

 

 

 

On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:

 

 

The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

 

allan

 

On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:

All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?

Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.

What am I missing?
Erik A


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

 

Hmmm. I resemble that remark.  :)

 

Bill in OKC 

 

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

 

Aphorisms to live by:

Good judgement comes from experience. Experience comes from bad judgement. 

SEMPER GUMBY!

Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better

 

 

 

On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:

 

 

That's 30" you can fill with antiques or junque. Seems to be what happens to me.

 

Eddie



------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:

So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.

My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A



--

"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


mike allen
 

        I don't have a taper attachment for my lathe , but with the prices for these things these days the only way I will ever get one is

        1.  if it falls of a truck in front of my place (which is highly unlikely    since I own the road & no one can drive by my place )

        2. Someone wants to sell me one for nickels on the dollar

        3. If I make one .

        I'm guessin it will be 3  but anyways  I do have the part that bolts on to the back of the saddle , & that give me a great place to put a indicator for checkin my work & setups without getting in             the  way of anything . It would be a real easy part to make & is super helpful. .

        animal

On 11/16/2022 3:47 PM, Rogan Creswick wrote:

I wish the south bends had more flat (and machined) surfaces on the cross slide and compound for things like this.

It would be convenient to use an angle block / 1-2-3 block and run up against the chuck to set an angle like this, but there are few flat surfaces to set things against.  I imagine you could make something that slid into the toolpost mounting T-Slot and registered against the machined sides of that (they are *probably* parallel to the dovetails...)

I was considering the other night the thought of machining / fabricating a cross slide with a toolholder--no compound--in order to have more fixturing options, greater rigidity, and machined surfaces for setups like this.

On Wed, Nov 16, 2022 at 10:13 AM mike allen <animal@...> wrote:

    I forgot to put the protractor in my last mail . set it on your chuck & the compound .

https://www.amazon.com/VOLCANOES-CLUB-Digital-Angle-Finder-Protractor/dp/B09PN8CQH7/ref=sr_1_2_sspa?gclid=Cj0KCQiAsdKbBhDHARIsANJ6-jdsmSKC5KBsU8eITCCuqNdZ25CMya_6_N4pok28hMiXVaeDRN3PRHoaAsNiEALw_wcB&hvadid=409948644601&hvdev=c&hvlocphy=9032186&hvnetw=g&hvqmt=e&hvrand=17812276858912524318&hvtargid=kwd-1126019736&hydadcr=1638_11256579&keywords=adjustable+protractor&qid=1668621961&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

        animal

On 11/16/2022 7:33 AM, Tyler via groups.io wrote:
Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

- Set the compound at the approximate angle with the markings.

- Mount an indicator on the compound perpendicular to the work, and on center height.

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.






On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:


The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

allan

On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:
All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie


------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up
General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.
As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A


--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


Bill in OKC too
 

They're not milled, they're cast in, ready to machine. 

Bill in OKC

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Wednesday, November 16, 2022 at 06:31:24 PM CST, Rogan Creswick <creswick@...> wrote:


Oh, that's interesting!  Seems like a reasonable price, too. Especially if the T-slots are already milled.

The other thing I'd like to get out of this change is space to attach a DRO.

On Wed, Nov 16, 2022 at 3:59 PM ww_big_al <arknack@...> wrote:

MLA Tools has a cast kit to do this.

http://mlatoolbox.com/S-4382.html

 

Paula on practical machinist forum did a excellent writeup on making it.

https://www.practicalmachinist.com/forum/threads/machining-a-t-slotted-cross-slide.177054/

 

Al

 

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of Rogan Creswick
Sent: Wednesday, November 16, 2022 6:48 PM
To: SouthBendLathe@groups.io
Subject: Re: [SouthBendLathe] follow up to my follow up

 

I wish the south bends had more flat (and machined) surfaces on the cross slide and compound for things like this.

 

It would be convenient to use an angle block / 1-2-3 block and run up against the chuck to set an angle like this, but there are few flat surfaces to set things against.  I imagine you could make something that slid into the toolpost mounting T-Slot and registered against the machined sides of that (they are *probably* parallel to the dovetails...)

 

I was considering the other night the thought of machining / fabricating a cross slide with a toolholder--no compound--in order to have more fixturing options, greater rigidity, and machined surfaces for setups like this.

 

On Wed, Nov 16, 2022 at 10:13 AM mike allen <animal@...> wrote:

    I forgot to put the protractor in my last mail . set it on your chuck & the compound .

https://www.amazon.com/VOLCANOES-CLUB-Digital-Angle-Finder-Protractor/dp/B09PN8CQH7/ref=sr_1_2_sspa?gclid=Cj0KCQiAsdKbBhDHARIsANJ6-jdsmSKC5KBsU8eITCCuqNdZ25CMya_6_N4pok28hMiXVaeDRN3PRHoaAsNiEALw_wcB&hvadid=409948644601&hvdev=c&hvlocphy=9032186&hvnetw=g&hvqmt=e&hvrand=17812276858912524318&hvtargid=kwd-1126019736&hydadcr=1638_11256579&keywords=adjustable+protractor&qid=1668621961&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

        animal

On 11/16/2022 7:33 AM, Tyler via groups.io wrote:

Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

 

- Set the compound at the approximate angle with the markings.

 

- Mount an indicator on the compound perpendicular to the work, and on center height.

 

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

 

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

 

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.

 

 

 

 

 

 

On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:

 

 

The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

 

allan

 

On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:

All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?

Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.

What am I missing?
Erik A


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up

 

Hmmm. I resemble that remark.  :)

 

Bill in OKC 

 

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

 

Aphorisms to live by:

Good judgement comes from experience. Experience comes from bad judgement. 

SEMPER GUMBY!

Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better

 

 

 

On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:

 

 

That's 30" you can fill with antiques or junque. Seems to be what happens to me.

 

Eddie



------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up

General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.

As usual, your mileage may vary.


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:

So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.

My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A



--

"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


Andrei
 

Mike, there are several videos o people making the taper attachments. Did not seem to be overly complicated. 

PS
I am not making one for myself.... ever


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of mike allen <animal@...>
Sent: Wednesday, November 16, 2022 9:10 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 

        I don't have a taper attachment for my lathe , but with the prices for these things these days the only way I will ever get one is

        1.  if it falls of a truck in front of my place (which is highly unlikely    since I own the road & no one can drive by my place )

        2. Someone wants to sell me one for nickels on the dollar

        3. If I make one .

        I'm guessin it will be 3  but anyways  I do have the part that bolts on to the back of the saddle , & that give me a great place to put a indicator for checkin my work & setups without getting in             the  way of anything . It would be a real easy part to make & is super helpful. .

        animal

On 11/16/2022 3:47 PM, Rogan Creswick wrote:

I wish the south bends had more flat (and machined) surfaces on the cross slide and compound for things like this.

It would be convenient to use an angle block / 1-2-3 block and run up against the chuck to set an angle like this, but there are few flat surfaces to set things against.  I imagine you could make something that slid into the toolpost mounting T-Slot and registered against the machined sides of that (they are *probably* parallel to the dovetails...)

I was considering the other night the thought of machining / fabricating a cross slide with a toolholder--no compound--in order to have more fixturing options, greater rigidity, and machined surfaces for setups like this.

On Wed, Nov 16, 2022 at 10:13 AM mike allen <animal@...> wrote:

    I forgot to put the protractor in my last mail . set it on your chuck & the compound .

https://www.amazon.com/VOLCANOES-CLUB-Digital-Angle-Finder-Protractor/dp/B09PN8CQH7/ref=sr_1_2_sspa?gclid=Cj0KCQiAsdKbBhDHARIsANJ6-jdsmSKC5KBsU8eITCCuqNdZ25CMya_6_N4pok28hMiXVaeDRN3PRHoaAsNiEALw_wcB&hvadid=409948644601&hvdev=c&hvlocphy=9032186&hvnetw=g&hvqmt=e&hvrand=17812276858912524318&hvtargid=kwd-1126019736&hydadcr=1638_11256579&keywords=adjustable+protractor&qid=1668621961&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

        animal

On 11/16/2022 7:33 AM, Tyler via groups.io wrote:
Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

- Set the compound at the approximate angle with the markings.

- Mount an indicator on the compound perpendicular to the work, and on center height.

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.






On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:


The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

allan

On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:
All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie


------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up
General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.
As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A


--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"


mike allen
 

        I seen a couple of them . I have a bud that is a full blown machinist that I plan to get the pro's & cons of the different taper attachments he has on some of his lathes . I'll also show him some

            of the tubes on them & see what he has to say about them . Seems that all the ones i see are for a short part @ 5-10 " . What if a guy wants to turn down & taper a rifle barrel . Does he do it

        5 " at a time & then re-setup ? I'm thinking that if I make one it will be the length between centers on my lathe ?

        animal

On 11/16/2022 7:06 PM, Andrei wrote:

Mike, there are several videos o people making the taper attachments. Did not seem to be overly complicated. 

PS
I am not making one for myself.... ever


From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of mike allen <animal@...>
Sent: Wednesday, November 16, 2022 9:10 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 

        I don't have a taper attachment for my lathe , but with the prices for these things these days the only way I will ever get one is

        1.  if it falls of a truck in front of my place (which is highly unlikely    since I own the road & no one can drive by my place )

        2. Someone wants to sell me one for nickels on the dollar

        3. If I make one .

        I'm guessin it will be 3  but anyways  I do have the part that bolts on to the back of the saddle , & that give me a great place to put a indicator for checkin my work & setups without getting in             the  way of anything . It would be a real easy part to make & is super helpful. .

        animal

On 11/16/2022 3:47 PM, Rogan Creswick wrote:
I wish the south bends had more flat (and machined) surfaces on the cross slide and compound for things like this.

It would be convenient to use an angle block / 1-2-3 block and run up against the chuck to set an angle like this, but there are few flat surfaces to set things against.  I imagine you could make something that slid into the toolpost mounting T-Slot and registered against the machined sides of that (they are *probably* parallel to the dovetails...)

I was considering the other night the thought of machining / fabricating a cross slide with a toolholder--no compound--in order to have more fixturing options, greater rigidity, and machined surfaces for setups like this.

On Wed, Nov 16, 2022 at 10:13 AM mike allen <animal@...> wrote:

    I forgot to put the protractor in my last mail . set it on your chuck & the compound .

https://www.amazon.com/VOLCANOES-CLUB-Digital-Angle-Finder-Protractor/dp/B09PN8CQH7/ref=sr_1_2_sspa?gclid=Cj0KCQiAsdKbBhDHARIsANJ6-jdsmSKC5KBsU8eITCCuqNdZ25CMya_6_N4pok28hMiXVaeDRN3PRHoaAsNiEALw_wcB&hvadid=409948644601&hvdev=c&hvlocphy=9032186&hvnetw=g&hvqmt=e&hvrand=17812276858912524318&hvtargid=kwd-1126019736&hydadcr=1638_11256579&keywords=adjustable+protractor&qid=1668621961&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

        animal

On 11/16/2022 7:33 AM, Tyler via groups.io wrote:
Allan is right, the markings are not very accurate, but you can set an angle with only one indicator:

- Set the compound at the approximate angle with the markings.

- Mount an indicator on the compound perpendicular to the work, and on center height.

- Do some math: Find the short side length of a right triangle with a hypotenuse of a known length, like 1.000", and the angle you are trying to hit, like 5 degrees.  This would be 0.0872".

- When you traverse the compound by the hypotenuse length 1.000", the indicator dial should move the length of the triangle side you calculated: 0.0872"

- Adjust the compound angle until you can hit the correct number.  This is tedious but it should get you very close.






On Wednesday, November 16, 2022 at 06:56:44 AM CST, m. allan noah <kitno455@...> wrote:


The markings are never accurate enough. If the angle is critical, you make test cuts and measure the workpiece. One way is to test the fit with marking blue and a matching socket. Another way is to measure the workpiece using a pair of dial indicators (one measuring the long feed, one on the cross slide measuring the work). There are other ways, but I find them less accurate or more complex.

allan

On Wed, Nov 16, 2022 at 7:42 AM E A <b-arch@...> wrote:
All, back to my original question... How does one cut an accurate taper (like 5 degrees or so) when the markings stop at 90?
Am I going the wrong direction? If you rotate the compound the other direction, you theoretically can set it accurately, but then your hand interferes with the chuck.
What am I missing?
Erik A

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Bill in OKC too via groups.io <wmrmeyers=yahoo.com@groups.io>
Sent: Tuesday, November 15, 2022 6:59 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] follow up to my follow up
 
Hmmm. I resemble that remark.  :)

Bill in OKC 

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

Aphorisms to live by:
Good judgement comes from experience. Experience comes from bad judgement. 
SEMPER GUMBY!
Improvise, Adapt, and Overcome.
Physics doesn't care about your schedule.
The only reason I know anything is because I've done it wrong enough times to START to know better



On Tuesday, November 15, 2022 at 03:10:31 PM CST, eddie.draper@... via groups.io <eddie.draper=btinternet.com@groups.io> wrote:


That's 30" you can fill with antiques or junque. Seems to be what happens to me.


Eddie


------ Original Message ------ From: "Andrei" <calciu1@...> To: "SouthBendLathe@groups.io" <SouthBendLathe@groups.io> Sent: Tuesday, 15 Nov, 22 At 20:24 Subject: Re: [SouthBendLathe] follow up to my follow up
General advice is to keep the lathe 30 inches away from a wall, however, a human needs a minimum of 18 inches to fit somewhere.
As usual, your mileage may vary.

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Davis Johnson <davis@...> Sent: Tuesday, November 15, 2022 2:51 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] follow up to my follow up

Or put the fixed mark in the rear? On mine at least. You either stand on your head or use a mirror. My guess is that they thought you would just walk around to the back. My lathe (and a great many others) is against a wall.

A previous owner added a mark in front, but they got it about 2 degrees off.

On 11/15/22 14:20, E A wrote:
So per folks's suggestions, I turned a plug to fit into my ss tubing at 5 degrees, which worked perfectly.
My question is about the compound slide... Why did SB stop the degree marks at 90? To set the compound up for my 5 degree cut, I had to overshoot 90, and take a guess as to what 5 degrees was. Did SB have some greater plan that I fail to see? Erik A


--
"well, I stand up next to a mountain- and I chop it down with the edge of my hand"