Homebrew PCBs

--- In Homebrew_PCBs@y..., Russell Shaw <rjshaw@i...> wrote:
> 
> 
> n4onl wrote:
> > 
> > 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?
> 
> There's a home-brew cnc yahoo group: cad_cam_edm_dro.

I found this group from a post in CCED. I hoped I'd get info here 
since Bill (list mom) might consider this Off Topic in that group.

Thanks
mike