Thanks Graham,I wasn't thinking so much about the overcutting so much since I was going to use the tiniest of tools and the image I want is very 'high contrast' so I'm really looking more for what on paper would look either black or white/on or off,all cuts being the same depth, but I can imagine this still to be a concern.What I was concerned with is doing it without a CAM.I was pretty sure a CAM package could do it.I was more wondering about the feasibility of roughly mapping the Z offset of a sphere since the image would easily be rasterized.I'm going to contact the guy who once did this for me,maybe I'm wrong but this guy was so 'old school' ,I don't even think he ever used a CAM package.Thanks,Keith