Hi, I'm coding up some software to import bitmaps and carve them as a "depth image" in the material.

Is there a standard rule of thumb etc when using a ball nose carving tool for the stepover value?

I have 1.5mm, 2.4mm and 3mm ball end cutting tools, and it would be great to have a ballpark idea of the best stepover values for roughing out and finishing.

Thanks!