Use Cut Line Surface Milling to machine a region between open or closed boundaries, called "cut lines". The "cut lines" that you select or sketch determine the shape of the first and last passes in the tool path; passes will first mimic the shape of the edge or entity specified as the cut line, then gradually change shape as necessary to accommodate different surface topology.
Notes:
You can perform Cut Line Surface Milling in step depth increments by using the OFFSET_INCREMENT and NUMBER_CUTS parameters.
You can machine undercuts in a 3-Axis NC sequence using a Side Mill tool. The gouge avoidance for the entire tool with respect to cut surfaces will be calculated automatically. The retract motions generated by the system will be checked for gouging, with problem areas highlighted. Specify appropriate Approach and Exit motions if gouging is detected.
To use Cut Line Surface Milling for concave surfaces where the curvature is greater than that of the tool, use the retract plane to define cuts.