If you can figure out which side is high, try clamping it in a vise and applying a bit of pressure. It may improve. It may get worse. It may not change at all. In the second & third case, a bit of shim material and clamping in the vise might improve the situation. If you own an arbor or other type of press, you could try that, too. I've got one of Harbor Freight's 20-ton hydraulic presses, and a variety of vices. I mean vises! ;) But any other vise that will clamp on it could work.? I've also got a large cast iron drill press that could do a bit of pressing...
YMMV, of course.
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 Saturday, June 8, 2024 at 04:51:05 PM CDT, John Entwistle via groups.io <jentwistle3@...> wrote:
A while back we were kicking around a thread on collet chucks. There was talk of making your own, and there was talk of one on ebay UK.
One member here (sorry, I forget who) posted that he¡¯d bought one and it had .004¡± run out.
Well, in a silly moment i bought one also, and mine is twice as good ¡®cause it has .008¡± run out!!
So, I decided to go ahead and re-cut it on my unimat along the lines of the ¡°make your own¡± discussion. What the heck, I can usually get under .001¡± and this was already threaded for the spindle and should be pretty straightforward as long as i can get the taper right, right?
So I turned it down with the idea of cutting off the threaded portion and rethreading further ¡°up¡± the body, then recutting the taper inside.
But when turning it down I received an interesting surprise as shown in this photo:
It seems this chuck is not one piece, but rather an adapter that has been pressed on the end of someone else¡¯s chuck! No wonder there was so much run out!
Not that i know what to look for I can see the different colors of the two parts:
in guess you could try to straighten this by wacking it with a hammer, but I don¡¯t hate my spindle bearings that much. It¡¯s not their fault I bought this!
Guess I¡¯m gonna try the ¡°make your own chuck from scratch route.
Bill in OKC too