Homebrew PCBs

>Parse the g-code so that before every drill
>it retreats a little bit in both X and Y.

CNC sofware does a much better job than that based on the actual 
backlash you tell it. If you take the Excellon ouput and sort on one 
axis (low to high for example) then that axis never reverses (assuming 
you start drilling at the lowest coordinate) hence zero backlash on 
that axis. Usually this feature is built into either the Excellon CAM 
processor or the Excellon to G-code converter.

--- In Homebrew_PCBs@yahoogroups.com, "Andrew" <andrewm1973@...> wrote:
>