Olle wrote:This picture shows what I want to do. The outline of the checkering will have a tiny "saw tooth" pattern after the 3D cut, and the clean-up pass will remove them. The way I have it set up now is to set an allowance so I'm actually cutting into the edge of the checkering by just a few 1/1000", but the 1/16" ball tip I use is long and slender so it will still bounce and chatter a bit. I would like to make this cut incrementally instead (and possibly after the roughing pass), as I figure it will make a smoother cut.
After you run your roughing and finish toolpath select the vector going around the raised part you want to clean offset it into the work say a few 1/1000's as much as you need to clean off, then offset the vector outwards the thickness of the cutter tip plus a few 1/1000's, select the model plus the two vectors do a finish toolpath between vectors, job done.
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