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Re: Collets questions


 

I've got a functional chuck that I "built" from one made for the 7x mini-lathes. Still needs a bit of tweaking, as I got it to within .001", but not better. I also have the MT3 to ER-32 collet holder that I first bought, also for that 7x ML. It works nicely, but you can't pass longer stock through it. I have to practice cutting metric threads on my Atlas before I'm sure I can make my own, but I've got a couple of ER-32 nuts, as well. ;) Since I bought that, I've filled in the set of collets that came with the MT3 shanked collet holder, and bought another for MT2. Also MT2 & MT3 collets, and ER-25, and a some ER-11... You could say it's getting out of hand, and I'd not really be able to argue with you about it. :)

Collet holders can come in handy, but a good 4-jaw chuck will do most everything they can do, just slower. I've been collecting stuff for MT3/MT2 lathes since 2008... I've also picked up stuff either in sets or individually, as and when they came available AND I had some spare money. There are a lot of paths to having a well-equipped lathe, and if you're a good machinist already, you can make much of the stuff yourself. I wasn't nearly that good when I started collecting. I have done some things to help me though. I have a stub arbor that matches the spindle threads on my TH42, which makes it easier to make stuff for the lathe. I don't have to pull the chuck off the lathe to test fit something I make for the lathe spindle.

I need to get my lathe set up properly again. Which means I need to seal an MDF benchtop I laminated, and get it drilled and sealed again, then get the lathe and stuff all put together. And I can only dream of an 8' bed...

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.
Expect in one hand, expectorate in the other. See which one gets full first.



On Tuesday, January 9, 2024 at 12:01:42 PM CST, Greg via groups.io <gregj@...> wrote:


Or make an ER collet chuck for the spindle.? I’ve made 2 for different series collets ER-20 and ER-32.? Bought the nuts, made the bodies.? Plans are in the Files section, adjust for the collet series.

?

Greg

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