Use the Leads tab to control how the tool moves on and off the surface milling feature (lead in/out) and how the tool moves between toolpaths (stepovers).
Stepover type — The moves between toolpaths are controlled by the Stepover type.
Lead-in/out options
Plunge to Depth — When this option is selected the tool plunges downward to depth.
Ramp to Depth — When this option is selected: If Helical is deselected, the tool zigzags into the material. The angle of the zigzag passes is controlled by Ramp angle. If Helical is selected, the tool spirals into the material.
Plunge to Pre-drill Location — When this option is selected a pre-drill operation is added to the feature. Enter a Drill diameter to set the pre-drill tool diameter. Use a drill smaller than the diameter of the Z roughing tool to prevent gouging. Select Spot drill to add a spot drill operation before the pre-drill operation. FeatureCAM automatically calculates pre-drill locations based upon the regions where it must plunge interior to the stock boundary. For Vortex toolpaths, you can set the pre-drill location by setting the Plunge Point(s) on the Milling tab.
Approach options
Approach Outside Where Possible — Select this option to include a small horizontal move so the tool plunges off the stock.