Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Hi everyone.
Just found this group and I have been skimming through the posts.
I'm interested in building a CNC PCB mill/drill. Stepper motors,
linear bearings/rods, antibacklash nuts on Acme rod... and a Black
and Decker RTX. The resolution works out to 0.0005" per full step and
0.00025" if I half step.

Is 1/2 or 1/4 of a thousands a good resolution for this project?

Does anyone have links to similar projects?

Hints? Tips? Insight?

Thanks
mike