Original Undercut Boundaries
SURFCAM will determine the edges of the material (the rest material) that was not removed by the previous operations in the selected Setup Section and create boundary curves along these edges. Select this option to display the Undercut Boundaries curves along with the toolpath and save them on the currently active layer. It is best to save it on a layer other than the one containing your drawing.
Intermediate Offset Curves
SURFCAM will determine boundary curves that are offset from the Original Undercut Boundaries. Select this option to display the Intermediate Offset Curves and save them on the currently active layer.
Normals Used For Tool Offset
SURFCAM will display and save normals used to determine the tool offset.
Final Offset Curves
SURFCAM will project the Intermediate Offset Curves onto the 0 Z-level plane. The Final Offset curves are used to guide the creation of the rest machining toolpath. Select this option to display the final offset curves and save them on the currently active layer.