On Tuesday 31 May 2016 09:20:08 andy pugh wrote:

> On 31 May 2016 at 14:12, Gene Heskett <ghesk...@shentel.net> wrote:
> >> If you are boring to suit, surely you can correct the runout?
> >
> > I might have to make a special contacting gauge for that,
>
> I confess that for this job I just choose to trust my 3-jaw chuck.
> So, I turn up a split ring to fit over the pulley teeth and fill out
> the radius to the tops of the flanges, then hold it in the 3-jaw and
> bore the centre hole.

1. I don't have a lathe to fix the lathe. Not to mention my 3 jaw is 
sloppy as hell.  I've even ground it while spinning but the scroll is so 
poorly cut that half a turn of the wrench and its AFU by 10 thou.

2. So this bore job will have to be done by the mill using a g2 or g3 
cycle.  And a fresh 1/4" mill.  And I'll have to study up on shrink 
fits. I want this one tight enough it will take a hacksaw slot all the 
way to the shaft to remove it. A torch on the pulley, and the shaft 
frozen by dry ice kind of a fit.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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