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M12x1 thread chaser
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Hey Folks
anyone know where to get a pair of M12x1.0 thread chasers??
looking for internal (like tap) and external (like die) thread repair ability¡?
could use a tap and die but runs risk of too much material removal.
thanks,
Jeff
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So NO, on the thread chaser?!
Jeff
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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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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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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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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
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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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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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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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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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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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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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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Bill I don¡¯t see an M12 x 1.0 tap/die in that linked set??
it is an M12x1.0 thread on spindle and tailstock correct??
Jeff
?
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Removal of metal by dies is largely a matter of tolerances. As a builder of wooden boats, I have often had to make long bolts from rod stock, and have had to adjust my dies according to the nuts that were available at that moment. There _are_ standard tolerances, but who holds to which ones is a question-mark.
Michael
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Not sure what you're seeing, but when I click the link, I see a pair of M12x1mm taps, with a single M12x1 die. And that is the correct size for the spindle & tailstock threads on the DB & SL Unimats.?
Used those to make the ER-25 collet chuck for my SL. Also needed an 11mm tap drill.?
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 11:43:06 AM CDT, rcjge <jgpedwards@...> wrote:
Bill I don¡¯t see an M12 x 1.0 tap/die in that linked set??
it is an M12x1.0 thread on spindle and tailstock correct??
Jeff
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Bill, I get to a set like that, just don¡¯t see in M12x1.0 option.?
?
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Ok Bill,
was misreading.
Why does set include two taps?
have you ever ¡°chased¡± a thread with those taps or die?
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rcjge
Bill in OKC too
Tool247
John Entwistle
Unimat Matt