Quote Originally Posted by rgsparber View Post
Tony,
I just drilled some #65 holes in a circuit board at 5,000 RPM and 0.5 IPM. It worked fine. I know I can feed faster but didn't want to push it yet. First problem I had was securing the board. That vacuum fixture is exactly what I need. A friend of mine was an expert on drilling tiny holes for GM and he said 5,000 RPM is fine as long as I peck deep holes. However, for engraving, I beleive I will need to up where you are.
Rick
Several decades ago when I drew tracks by hand for etching I used a tiny hand held drill (30,000 rpm IIRC). It worked fine but it was tedious when I had several boards to do.