Mastercam Case Study: Using the "3D toolpath fillet" option

The "toolpath fillet" option automatically generates fillet motions in your high speed toolpath. Toolpath filleting allows you to create smooth toolpath motion while maintaining a high feed rate. With this option activated in your roughing tool path, the roughing tool (normally flat end mill/bull mill) can skip the small fillets on the part (in both vertical and horizontal direction) by creating a fillet motion. Then you can finish the part with a big cutter (a ball mill that has radius bigger than part fillet radius) without leaving the marks from the roughing end mill.