When using a 3-axis toolpath, the following settings are available on the Safe Area dialog:
Z_Surf (S) — Enter the distance from the Face origin to the part surface (along the normal to the Face plane).
Z_Rapid (R) — Enter the distance from the part surface to the Rapid Plane when the tool performs rapid moves.
Z_Clear (Cl) — Enter the distance from the part surface to the Clearance Plane, when a tool starts feeding into the part.
Note: These settings are displayed when using a Z-oriented tool. When using the Mill ZY Plane, Mill Diam, Polar and Mill Cylinder machining functions in PartMaker/SwissCAM and Turn-Mill, PartMaker uses X-oriented tools and so these settings appear as X_Surf, X_Rapid and X_Clear.