Hi all - the project is PCB milling for a homebrew ham radio project. The shapes are a series of adjoining rectangles each snapped to the same grid line. Each rectangle is meant to be an island of isolation with no continuity between the island and the rest of the board - so I just need to cut through the copper. The job settings are as follows - 60 degree V bit. Contour Tool Path with no offset. Max depth .250 mm, depth per pass 0.083 mm, feed 150 mm/min, step over is 0.15. It appears to me that Carbide is creating a tool path for each rectangle separately and not accounting for the overlapping edge. In other words with my current settings there should be 3 passes, but the common edge gets 6 passes. Is there another way I should be doing this?
You can see that the overlapping edges appear to be wider groves than the single edges. Any help or suggestions for a different way to do this would be appreciated.