I am using the blend toolpath to create an edge profile with a ball endmill. This toolpath is the last one in my setup, so the tool has no particular place to go afterward. For some reason, it's making a bunch of fancy moves after it completes machining the part before the final lead-out. During the process, it cuts a small gouge into my part. Fortunately for me, this is the bottom of my part, but still I would like to avoid this in the future. I understand that the blend toolpath is a preview feature, so maybe it's a bug. On the other hand, I am a newbie to manufacturing, so perhaps it's me. My main question is how to prevent this, but I'm also interested in learning why it is happening in the first place. In the image, the yellow line is a retraction, and that works OK. However, the green line traces right across my part. In the simulation, this doesn't show as red, nor does it stop the simulation. Nevertheless, in an orthogonal view, I can see there is no clearance between it and the surface. In real life, it does create a small gouge in the part.
