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Re: collets:
The ER40 collets do not have a gap in their range. There are 29 collets in a complete imperial set. Most “sets” sold are not complete. I had to purchase individual collets to make a complete set. What I like about the imperial set is the collets overlaping ranges so I can select a collet in it’s middle of the clamp range. Al
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of Steven Schlegel
Sent: Tuesday, June 22, 2021 12:32 AM To: SouthBendLathe@groups.io Subject: Re: [SouthBendLathe] collets:
About the ER collets, each collet covers a range of 1mm. I use ER 32 collets because I found them on sale. I wish I had ER 40 collets because they go bigger. The ER collets go from the printed size down 1mm. Never put a bit or stock bigger than the printed size into an ER collets because it could distort the collet. The ER collets hold bits/stock over a longer length than a 3c or 5c collet, giving them a better grip. The modestly priced sets will give you 0.0003" TIR which is pretty good. Do to the range they will hold, you do not need an exact size. Nothing wiggles I'm the ER collet like it does in the 3c or 5c collet if the size is not perfect. I purchased both both a square and hex holder, and a lathe chuck that mounts on a backplate. All pretty reasonably priced. I use one set of collets for both my lathe and vertical mill. While I have both imperial and metric, I have only used the metric set because it gives me complete coverage from 2mm to the top of the range. The imperial set has gaps that exceed the 1mm range. I simple measure the bit/stock diameter in mm and chose the next integer size collet larger if it is between sizes. Just my experience... Steven From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of comstock_friend <jfriend314@...>
"Complete set"; are you sure you want or need 1/64", 1/32" or 3/64" collets? They're in the set. My first size either 3C or 5C is 1/16" (well, I do have a 5C 3/64" but I do not anticipate using it any time soon!) Sets of 3C's also include hex and squares (something that the ER series can't handle). Obviously more collets in 5C, as they go up to 1-1/4" or larger with closers and such. The typical max 3C (also 1A you will find interchanges easily) taps out at 9/16".
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Re: collets:
Thanks Tom that is a great YouTube by Joe Pi. He has done some really great instruction videos.
John B
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of Thomas Harrold via groups.io
Sent: 22 June 2021 00:02 To: SouthBendLathe@groups.io Subject: Re: [SouthBendLathe] collets:
JohnB: exactly right on the grip range. Go watch youtube video from Joe Pi - he covers collet grip issues, and explains it very well.
BTW, for the original poster of this topic: If you have 20 3c collets, you may be close to having a full set. I rarely see a lathe with more than 15-20.
-Tom
From: SouthBendLathe@groups.io [mailto:SouthBendLathe@groups.io] On Behalf Of John
Number of collets to cover a given range is dependent on the grip range of the collet.
5C do not have a very wide range.
I think the ER series has a wider grip range per collet than the 5C. John B
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of Andrei
They go from 2 or 3mm up to 26, I rhink Typos are courtesy of autocorrect.
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Joaquin Pendleton via groups.io <joaquinpendleton@...>
how many sizes are there on the er40? I like the 5c cause there are 72 sizes. Do you also have a collet block for the er40?
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Re: collets:
wlw19958
Hi There,
On Mon, Jun 21, 2021 at 08:24 PM, comstock_friend wrote: ""Complete set"; are you sure you want or need 1/64", 1/32" or 3/64" collets? They're in the set."I cannot speak to other manufacturers but SBL only offered collets starting at 1/16" (according to their catalogs). Good Luck! -Blue Chips- Webb
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Re: collets:
Steven Schlegel
About the ER collets, each collet covers a range of 1mm. I use ER 32 collets because I found them on sale. I wish I had ER 40 collets because they go bigger. The ER collets go from the printed size down 1mm. Never put a bit or stock bigger than the printed
size into an ER collets because it could distort the collet.
The ER collets hold bits/stock over a longer length than a 3c or 5c collet, giving them a better grip. The modestly priced sets will give you 0.0003" TIR which is pretty good. Do to the range they will hold, you do not need an exact size. Nothing wiggles I'm
the ER collet like it does in the 3c or 5c collet if the size is not perfect.
I purchased both both a square and hex holder, and a lathe chuck that mounts on a backplate. All pretty reasonably priced.
I use one set of collets for both my lathe and vertical mill. While I have both imperial and metric, I have only used the metric set because it gives me complete coverage from 2mm to the top of the range. The imperial set has gaps that exceed the 1mm range.
I simple measure the bit/stock diameter in mm and chose the next integer size collet larger if it is between sizes.
Just my experience...
Steven
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of comstock_friend <jfriend314@...>
Sent: Monday, June 21, 2021 8:24:54 PM To: SouthBendLathe@groups.io <SouthBendLathe@groups.io> Subject: Re: [SouthBendLathe] collets: "Complete set"; are you sure you want or need 1/64", 1/32" or 3/64" collets? They're in the set. My first size either 3C or 5C is 1/16" (well, I do have a 5C 3/64" but I do not anticipate using it any time soon!) Sets of 3C's also include hex and squares
(something that the ER series can't handle). Obviously more collets in 5C, as they go up to 1-1/4" or larger with closers and such. The typical max 3C (also 1A you will find interchanges easily) taps out at 9/16".
There are standard metric sizes and the are decimal sizes by thousands. A "complete set" is crazy expensive in 5C and probably unobtainum in 3C/1A. Here's my (mostly complete) set: John
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Re: collets:
"Complete set"; are you sure you want or need 1/64", 1/32" or 3/64" collets? They're in the set. My first size either 3C or 5C is 1/16" (well, I do have a 5C 3/64" but I do not anticipate using it any time soon!) Sets of 3C's also include hex and squares (something that the ER series can't handle). Obviously more collets in 5C, as they go up to 1-1/4" or larger with closers and such. The typical max 3C (also 1A you will find interchanges easily) taps out at 9/16".
There are standard metric sizes and the are decimal sizes by thousands. A "complete set" is crazy expensive in 5C and probably unobtainum in 3C/1A. Here's my (mostly complete) set: John
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Re: collets:
You’re welcome. I keep a copy of the chart with the ER40 making it easy to select the correct size collet. You don’t need the metric set because the imperial set covers all sizes. Al
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of Nick Andrews
Sent: Monday, June 21, 2021 1:43 PM To: SouthBendLathe@groups.io Subject: Re: [SouthBendLathe] collets:
Thanks! I just got a set of 29 ER40 collets to use in my SB mill and this chart will be helpful for me. I ordered a couple of tool holders to use them with to better grip random-sized mills or drills since I only have a couple of 3/8" and 1/2" BT30 tool holders but a sordid collection of cutters. I was debating if I should buy a set of metric collets too. Figured I could get a collet block to use them for holding work in the vise or on rotary table as well. Or in the shaper vise. My Sheldon lathe came with a few 5C collets, but I haven't made a collet closer for the spindle to use them with yet. While I may buy more 5C collets, a ER40 collet chuck for the lathe might be more useful and at this point cheaper.
On Sun, Jun 20, 2021 at 8:09 PM ww_big_al <arknack@...> wrote:
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Re: 9" Taper Attachment
david pennington
Marvelous. Will you put it in the files?
toggle quoted messageShow quoted text
-------- Original message -------- From: wlw19958 <wlw-19958@...> Date: 6/21/21 16:05 (GMT-07:00) To: SouthBendLathe@groups.io Subject: Re: [SouthBendLathe] 9" Taper Attachment On Mon, Jun 21, 2021 at 01:47 PM, david pennington wrote: "Webb, do you have Form 906L in electronic format? I'd like to have a copy."I didn't but I just made a scan of it. Good Luck! -Blue Chips- Webb
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Re: 9" Taper Attachment
wlw19958
Hi There,
On Mon, Jun 21, 2021 at 01:47 PM, david pennington wrote: "Webb, do you have Form 906L in electronic format? I'd like to have a copy."No. But I have made a scan of it for you. Good Luck! -Blue Chips- Webb
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Re: 9" Taper Attachment
david pennington
Thanks...that was so easy. There is a good set of step-by-step installation instructions. Webb, do you have Form 906L in electronic format? I'd like to have a copy. Thanks, Dave David W. Pennington Denver, Colorado 720-442-3744
On Monday, June 21, 2021, 12:57:53 PM MDT, mike allen <animal@...> wrote:
go down to the bottom of this page & hit " your subscription" then from the list on the left side of the new page click on files animal On 6/21/2021 10:34 AM, david pennington
via groups.io wrote:
Hi, Webb,
Thanks for the information
about installation!
Here are two pictures of
the end bracket that fastens to the lathe bed. Note the
cotter key in the one. On the other side, the pin has been
subjected to a thick coat of paint. Close examination shows
it to be knurled.
Mike,
How do I access the files?
I may have known at one time, but haven't a clue now.
Thanks,
Dave
David W. Pennington
Denver, Colorado 720-442-3744
On Monday, June 21, 2021, 10:55:55 AM MDT, wlw19958
<wlw-19958@...> wrote:
Hi There,
On Mon, Jun 21, 2021 at 09:17 AM, david pennington wrote: "There is a pin on the fixed end bracket. I cannot figure out its function." for the 9 Inch and 10K taper attachment (Forms 906L and 1406) and I don't see any "pin" in the "end bracket" (SBL part no: AS864NK1). Are you possibly confusing the "bed bracket" (SBL part no: AS862NK2)? This is the bracket that bolts to the back of the saddle. There are two pins that can be used with it (SBL part no: 160X82) which are 1/4" x 1" long straight pins. When attaching a taper attachment to a lathe, the bed bracket should be mounted so that the top surface of the swivel bar runs flat and true to the ways of the bed (there is some play in the mounting holes in the bracket to allow some minimal movement for alignment). Once the bracket and swivel bar are set and running true, one is to drill and ream through the pin holes in the bed bracket into the saddle and install the two 1/4" x 1" pins. Then, if you choose to remove the taper attachment for some reason, you can use the pins to relocate the bed bracket and avoid the necessity of re-aligning the bed bracket and swivel bar when re-attaching the taper attachment. Good Luck! -Blue Chips- Webb
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Re: collets:
mike allen
I think theres different sets & they go by what the
fraction size is . so you may have a set of 16 in 16's but not
have the 32's between the 16's which would make a 32 piece set if
that makes any sense . I remember reading somewhere that the guy said to get the metrics in the ER's cause there is a better grip range . But I could be totally wrong on both accounts animal
On 6/21/2021 10:26 AM, Glen Ruch via
groups.io wrote:
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Re: 9" Taper Attachment
mike allen
go down to the bottom of this page & hit " your subscription" then from the list on the left side of the new page click on files animal
On 6/21/2021 10:34 AM, david pennington
via groups.io wrote:
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Re: 5C collet closer
Ruth Busch
Any idea what my problem is?
toggle quoted messageShow quoted text
John
----- Original Message -----
From: "Jim_B" <jim@btdtrf.com> To: "SouthBendLathe" <SouthBendLathe@groups.io> Sent: Monday, June 21, 2021 1:05:05 PM Subject: Re: [SouthBendLathe] 5C collet closer Long story, so forgive me. I had an early 405 9’ Workshop. it had a “Top Oiler” headstock, I Changed this out to a later side oiler. While I was doing thisI also used a 10K spindle. (Yes the 9” Workshop and 10K have the same journal dimensions.) The primary reason, at the time, was that the 10K spindle has a slightly larger bore. 55/64 vs 49/64, or 0.860 vs 0.766. This is enough to add a lot of versatility. IN ADDITION the 10K spindle will accept a SB proprietary 6K collet. It does this without any adapter. These allow one to hold 5/8 stock through the headstock as opposed to the upper limit of 1/2 THROUGH THE HEADSTOCK with the 3C. 6K collets are expensive and rare, I took me about 8 years to collect a complete set. I can go from 1/16 to 5/8 in steps of 1/64. I highlighted the 1/2 THROUGH THE COLLET because there are some 3C collets larger than 1/2” which, have an internal step bore, and allow you to insert material to a depth of about 1”. I had them in steps of 1/64 to 9/16” at one time. I sold my 405 some years ago, along with the larger than 1/2 collets. One thing which has not been mentioned. Is that the 3C/5C/6K collets are available in in botjh square and Hex. Not so with the ER’s. I use 5C on my 10L and I do have some hex and square collets. I find them quite useful. I do have and ER-40 setup, but I mostly use that for odd size work, since my 5C’s are incremented in 1/32” steps. I do miss having the 1/64 steps of the 6K’s but while I still have the collet set, I don't have a Lathe to take them. One other note. The ER’s with their adapter stick out beyond the spindle 1.5 to 2”. I don't care for that. -- Jim B
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Re: 5C collet closer
Long story, so forgive me.
I had an early 405 9’ Workshop. it had a “Top Oiler” headstock, I Changed this out to a later side oiler. While I was doing thisI also used a 10K spindle. (Yes the 9” Workshop and 10K have the same journal dimensions.) The primary reason, at the time, was that the 10K spindle has a slightly larger bore. 55/64 vs 49/64, or 0.860 vs 0.766. This is enough to add a lot of versatility. IN ADDITION the 10K spindle will accept a SB proprietary 6K collet. It does this without any adapter. These allow one to hold 5/8 stock through the headstock as opposed to the upper limit of 1/2 THROUGH THE HEADSTOCK with the 3C. 6K collets are expensive and rare, I took me about 8 years to collect a complete set. I can go from 1/16 to 5/8 in steps of 1/64. I highlighted the 1/2 THROUGH THE COLLET because there are some 3C collets larger than 1/2” which, have an internal step bore, and allow you to insert material to a depth of about 1”. I had them in steps of 1/64 to 9/16” at one time. I sold my 405 some years ago, along with the larger than 1/2 collets. One thing which has not been mentioned. Is that the 3C/5C/6K collets are available in in botjh square and Hex. Not so with the ER’s. I use 5C on my 10L and I do have some hex and square collets. I find them quite useful. I do have and ER-40 setup, but I mostly use that for odd size work, since my 5C’s are incremented in 1/32” steps. I do miss having the 1/64 steps of the 6K’s but while I still have the collet set, I don't have a Lathe to take them. One other note. The ER’s with their adapter stick out beyond the spindle 1.5 to 2”. I don't care for that. -- Jim B
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Re: collets:
Thanks! I just got a set of 29 ER40 collets to use in my SB mill and this chart will be helpful for me. I ordered a couple of tool holders to use them with to better grip random-sized mills or drills since I only have a couple of 3/8" and 1/2" BT30 tool holders but a sordid collection of cutters. I was debating if I should buy a set of metric collets too. Figured I could get a collet block to use them for holding work in the vise or on rotary table as well. Or in the shaper vise. My Sheldon lathe came with a few 5C collets, but I haven't made a collet closer for the spindle to use them with yet. While I may buy more 5C collets, a ER40 collet chuck for the lathe might be more useful and at this point cheaper.
On Sun, Jun 20, 2021 at 8:09 PM ww_big_al <arknack@...> wrote:
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Re: 9" Taper Attachment
david pennington
Hi, Webb, Thanks for the information about installation! Here are two pictures of the end bracket that fastens to the lathe bed. Note the cotter key in the one. On the other side, the pin has been subjected to a thick coat of paint. Close examination shows it to be knurled. Mike, How do I access the files? I may have known at one time, but haven't a clue now. Thanks, Dave David W. Pennington Denver, Colorado 720-442-3744
On Monday, June 21, 2021, 10:55:55 AM MDT, wlw19958 <wlw-19958@...> wrote:
Hi There, On Mon, Jun 21, 2021 at 09:17 AM, david pennington wrote: "There is a pin on the fixed end bracket. I cannot figure out its function." for the 9 Inch and 10K taper attachment (Forms 906L and 1406) and I don't see any "pin" in the "end bracket" (SBL part no: AS864NK1). Are you possibly confusing the "bed bracket" (SBL part no: AS862NK2)? This is the bracket that bolts to the back of the saddle. There are two pins that can be used with it (SBL part no: 160X82) which are 1/4" x 1" long straight pins. When attaching a taper attachment to a lathe, the bed bracket should be mounted so that the top surface of the swivel bar runs flat and true to the ways of the bed (there is some play in the mounting holes in the bracket to allow some minimal movement for alignment). Once the bracket and swivel bar are set and running true, one is to drill and ream through the pin holes in the bed bracket into the saddle and install the two 1/4" x 1" pins. Then, if you choose to remove the taper attachment for some reason, you can use the pins to relocate the bed bracket and avoid the necessity of re-aligning the bed bracket and swivel bar when re-attaching the taper attachment. Good Luck! -Blue Chips- Webb
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Re: collets:
Glen Ruch
http://www.cdcotools.com/ only offers 15 different
sizes of 3C collets, are you sure you don't have a full set? Regards.
On 6/20/21 4:40 PM, Joaquin Pendleton
via groups.io wrote:
Hello fellow SB machinists:
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Re: 9" Taper Attachment
mike allen
look in the files section of this group animal
On 6/21/2021 9:17 AM, david pennington
via groups.io wrote:
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Re: 9" Taper Attachment
wlw19958
Hi There,
On Mon, Jun 21, 2021 at 09:17 AM, david pennington wrote: "There is a pin on the fixed end bracket. I cannot figure out its function."Can you give more information? I have looked at two parts diagrams for the 9 Inch and 10K taper attachment (Forms 906L and 1406) and I don't see any "pin" in the "end bracket" (SBL part no: AS864NK1). Are you possibly confusing the "bed bracket" (SBL part no: AS862NK2)? This is the bracket that bolts to the back of the saddle. There are two pins that can be used with it (SBL part no: 160X82) which are 1/4" x 1" long straight pins. When attaching a taper attachment to a lathe, the bed bracket should be mounted so that the top surface of the swivel bar runs flat and true to the ways of the bed (there is some play in the mounting holes in the bracket to allow some minimal movement for alignment). Once the bracket and swivel bar are set and running true, one is to drill and ream through the pin holes in the bed bracket into the saddle and install the two 1/4" x 1" pins. Then, if you choose to remove the taper attachment for some reason, you can use the pins to relocate the bed bracket and avoid the necessity of re-aligning the bed bracket and swivel bar when re-attaching the taper attachment. Good Luck! -Blue Chips- Webb
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5C collet closer
Ruth Busch
I purchased a 1958 South Bend 10L that came with a set of 5C collets. The lathe has a collet closer lever that mounts on the left of the headstock.
How should I be using the collet closer? I noticed sometimes when I adjust the closer knob and pull the lever to tighten the collet, it will sort of snap and the stock seem firmly gripped. Other times I cannot find the snap and grip point when I adjust the knob and pull the lever; this causes me to question if the work is properly gripped.
What is going on?
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9" Taper Attachment
david pennington
Hi, Folks, I have a taper attachment that is missing a minor part and a couple of bolts and washers. I've "finally" decided to complete it and to install it on my 1946 9C. (The missing piece is a simple steel block with a tapped hole to clamp the fixed end bracket to the lathe bed. I figure 2" x 2.3" x 0.5" should do it.) I've looked at several videos on Youtube, including Tubalcain's TIPS 561. He showed an exploded parts page. There is a pin on the fixed end bracket. I cannot figure out its function. A. Anyone got the SB literature on this thing? B. Do we have a library somewhere? I've never tried to access it. Thanks, Dave David W. Pennington Denver, Colorado 720-442-3744
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