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Yes. This is the set I bought:? https://www.amazon.com/gp/aw/d/B09FL2HRX2 and bits & pieces I've made using them work fine on the spindle & tailstock of my SL. You might try hitting your tailstock with some PB-Blastet or WD-40, and giving it a good brushing with a stainles-steel toothbrush sized wirebrush. They tend to be a bit finer wire than the larger brushes, and clean threads pretty well.?
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!
Expect in one hand, expectorate in the other. See which one gets full first.
On Thursday, May 11, 2023 at 10:16:58 AM CDT, rcjge <jgpedwards@...> wrote:
The tap/die I need is for right hand tapping, to clean up threads on Unimat spindle and tailstock correct? In other words the item tightens onto spindle or whatever thread in a clockwise rotation??
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The tap/die I need is for right hand tapping, to clean up threads on Unimat spindle and tailstock correct? In other words the item tightens onto spindle or whatever thread in a clockwise rotation??
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Anyone have any doubt that the spindle and tailstock threads are M12x1.0??
my grinding arbor I got has a rusty thread which I’m trying to clean up.?
chuck, drill chuck, sanding plate all run on fine now, so I assume fault is with the grinding arbor internal thread being rusty.?
Having M12x1.0 tap and die are hand is a god idea for these though.
found a set that trumpets there ability to clean up threads, so we’ll see.
Jeff
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On May 11, 2023, at 4:45 AM, Unimat Matt <matthewtay2020@...> wrote: ?You could try a split die with some pressure on the slotted part to open it up, making it cut slightly oversize.
Have you tried eBay for chasers?
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You could try a split die with some pressure on the slotted part to open it up, making it cut slightly oversize.
Have you tried eBay for chasers?
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Use a metric thread file.? Available in 1.0 pitch inside and outside file.? It uses finger pressure matching and restoring the thread. ?It is a flat file you press into the thread.?
Look at my previous post with McMaster Carr part numbers.?
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On May 10, 2023, at 7:07 PM, rcjge <jgpedwards@...> wrote:
? Can believe there’s no M12x1.0 thread chasing tap and die available…?
maybe a European member of forums can help??
Grainger, Mactools, etc, don’t seem to have an M12x1.0 thread chaser. They are different from a cutting tap/die.?
a tap or die for thread cutting could destroy the threads m trying to clean up…
Dont know why the M12x1.0 die wouldn’t run onto the Unimat tailstock ram external (drill chuck) thread. It was obviously one sided with some chamfering on one side to allow settling over thread spindle nose but grabbed too much from there to be hand turned and I didn’t want to risk using a die wrench.?
Jeff
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Can believe there’s no M12x1.0 thread chasing tap and die available…?
maybe a European member of forums can help??
Grainger, Mactools, etc, don’t seem to have an M12x1.0 thread chaser. They are different from a cutting tap/die.?
a tap or die for thread cutting could destroy the threads m trying to clean up…
Dont know why the M12x1.0 die wouldn’t run onto the Unimat tailstock ram external (drill chuck) thread. It was obviously one sided with some chamfering on one side to allow settling over thread spindle nose but grabbed too much from there to be hand turned and I didn’t want to risk using a die wrench.?
Jeff
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Amazon? RzNXTyZ3aWRnZXROYW1lPXNwX3Bob25lX3NlYXJjaF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl
Granger? | |
Matco?
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On May 10, 2023, at 2:58 PM, rcjge <jgpedwards@...> wrote:
?Hi Bill
my issue is cutting taps and dies seem to remove too much metal. A thread chaser is a little different in that it repairs minor flaws.
I tried an M12x1.0 die on the tailstock ram spindle thread last night, no joy.. It was clearly the right size but wouldn’t run on readily.
Jeff
Also, look into thread forming taps. They are designed to form
threads by displacing instead of removing metal and might do what
you want: .
I don't find corresponding thread forming dies, but mcmaster has
an entire external thread repairing category:
And they reminded me of thread repairing files, which might suit
your purpose.
On 5/10/23 15:59, Tool247 wrote:
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I would buy a die and grind out 3 of the flutes with a
dremel stone and use to chase with one flute with finger
pressure.
also you could grind out 1 of a 2 flute tap or 2 of a 4
flute tap and chase the internal threads with finger pressure.
Also, I have used a regular tap as a chaser for external
threads by just pushing the points of a tap flute into the
external threads and chase them.
McMaster # 8309A11? metric thread file....0.8mm-3mm pitch
threads...external only
McMaster #2542A42??? Metric internal and external thread
file....ends might be just small enough to fit M12...
McMaster has other sets and choices for thread files and
thread repair.....
They actually have thread repair dies for metric....
good luck
Hi
Bill
my issue is cutting taps and dies seem to remove too much
metal. A thread chaser is a little different in that it
repairs minor flaws.
I tried an M12x1.0 die on the tailstock ram spindle thread
last night, no joy.. It was clearly the right size but
wouldn’t run on readily.
Jeff
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I would buy a die and grind out 3 of the flutes with a dremel stone and use to chase with one flute with finger pressure. also you could grind out 1 of a 2 flute tap or 2 of a 4 flute tap and chase the internal threads with finger pressure.
Also, I have used a regular tap as a chaser for external threads by just pushing the points of a tap flute into the external threads and chase them.
McMaster # 8309A11? metric thread file....0.8mm-3mm pitch threads...external only McMaster #2542A42??? Metric internal and external thread file....ends might be just small enough to fit M12...
McMaster has other sets and choices for thread files and thread repair..... They actually have thread repair dies for metric....
good luck
Hi Bill
my issue is cutting taps and dies seem to remove too much metal. A thread chaser is a little different in that it repairs minor flaws.
I tried an M12x1.0 die on the tailstock ram spindle thread last night, no joy.. It was clearly the right size but wouldn’t run on readily.
Jeff
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Hi Bill
my issue is cutting taps and dies seem to remove too much metal. A thread chaser is a little different in that it repairs minor flaws.
I tried an M12x1.0 die on the tailstock ram spindle thread last night, no joy.. It was clearly the right size but wouldn’t run on readily.
Jeff
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Re: Quick Change Tool Post and Buddy Bar
Kit I have one of these sets CNC machined precise and very well made.?
pat?
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Re: Was browsing the Aloris Tools website
Hello,David,
Your QC Toolpost is taking shape. Looking forward to seeing your finished project!
Dick
--
http://www.homemadetools.net/forum/?OFF-SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI-LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION
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Everyone I know uses taps and dies, and IIRC you're not interested in them.
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!
Expect in one hand, expectorate in the other. See which one gets full first.
On Tuesday, May 9, 2023 at 04:21:21 PM CDT, rcjge <jgpedwards@...> wrote:
So NO, on the thread chaser?!
Jeff
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So NO, on the thread chaser?!
Jeff
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Re: Was browsing the Aloris Tools website
The problem with the toolpost shown here is that it only holds a tool in one direction.
As mentioned elsewhere, "hkoesnadi" has toolposts currently on Ebay.
Also, if you want something a little bigger, there is the steel Sherline toolpost, currently on sale at $227.
I use these on Sherline lathes, and am very satisfied.? It does not rely on a central lever, but a capscrew to fasten a toolholder in each direction.
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Re: Quick Change Tool Post and Buddy Bar
Rather than item number, please search by Seller -- hkoesnadi.
If you want one of these, don't fart around.? He only makes these and sells peridically.
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Re: Quick Change Tool Post and Buddy Bar
Looks like he relisted it, different number:
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I just checked eBay for that number. It returned nothing. What is the seller name so I can search his store? Kit Maira Support the Cause of Peace
Visit?? On May 5, 2023, at 10:02 AM, Steve Johnson <steve@...> wrote:
?Just got a note from Harry - the tool post kits are back in stock and on Ebay. I just ordered one.?
Ebay item #285269003226
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Re: Quick Change Tool Post and Buddy Bar
I just checked eBay for that number. It returned nothing. What is the seller name so I can search his store? Kit Maira Support the Cause of Peace
Visit??
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On May 5, 2023, at 10:02 AM, Steve Johnson <steve@...> wrote:
?Just got a note from Harry - the tool post kits are back in stock and on Ebay. I just ordered one.?
Ebay item #285269003226
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Re: Was browsing the Aloris Tools website
Hello Herman, The line drawing shows the EMCO (original) QCTP designed for the Unimat 3 - here's a photo  I don't believe the QCTP photo you provided to be a Unimat 3 issued item. There are many small QCTPs that are small enough to fit the Unimats.
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Bill in OKC too
rcjge
John Entwistle
Unimat Matt
Tool247
OldToolmaker
Steve Johnson
Kit Maira