This method is similar to 2½ Axis Profiling. This method machines open and closed regions by tracing along one side of their contours. You can define offsets so that the tool makes multiple passes relative to the regions. Profiling can be used as a finishing operation after a Pocketing or Facing toolpath, or it can be used alone.
The machining regions can be selected from a cylindrical surface.  4 Axis Continuous Profiling |