Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Leon Heller" <leon_heller@h...>
wrote:

>What sort of accuracy do you get out of it - minimum annular ring on
pads?

I tried measuring it once using a perfboard. Looked like it must have
been within a mil or two over 8 inches in the X plane, the Y plane
might have been as much as 5 mil's off. I think it is because of
warped surfaces. I haven't used it a whole lot with fine pitch crowded
boards, so I haven't found problems. Notice I use precision lead screw
and anti-backlash nuts. More expensive but worth it for accuracy.

Scott