Advanced options for spiral machining

This dialog box enables you to define how the spiral cuts are performed.

Perform spiral When the Full option is chosen, the cuts are performed in constant spiral motions.
When the Blend along distance option is chosen, every slice except for the last one is trimmed by a certain distance. The trimmed slice is connected with the following slice by a blend spline. The value in the corresponding edit box defines the trimming distance for the slice in case the Blend along distance option is chosen.
Close When the First contour check box is selected, machining of the first slice is performed in a closed contour. The spiral machining motions start with the second slice. When this check box is not selected, the spiral machining motions start with the first slice.
Likewise, when the Last contour check box is selected, machining of the last slice is performed in a closed contour.