On Sat, 09 Oct 2010 14:36:44 GMT, Doug White
wrote:

I am milling a part I want to fit reasonably closely to something (close
slip fit, ideally). Something like -0.000"/+0.001". I have it clamped in
my mill vise, and I have a stop set to locate one end. I'm milling out a
small pocket, and the best I can do for measuring the width & length is a
digital caliper. The thing it fits on is too big to try in place.

Thus far, I haven't taken it out of the mill. I few more passes, and it
should be done. My question is whether I have a prayer of taking it out &
returning it with adequate precision if it ends up a bit tight? I was
figuring that if it doesn't quite fit, I could count on it not locating
exactly the same. That way another pass with the same settings should open
it up a hair.

My experience says that I should (barring chips getting in the way) be able
to relocate the part within 0.001", but I'm not sure how much better than
that I can count on. Depth isn't as critical, so a little "vice lift"
won't kill me.

Comments? Suggestions?

Thanks!

Doug White

You should be able to locate an edge to within half a thou with one of
these:
http://www.use-enco.com/CGI/INSRIT?P...&PARTPG=INLMK3