Longitudinal turning
The Long option enables you to execute longitudinal turning (the principal working direction is the Z-axis direction).
The following options are available in Mode:
External longitudinal turning (above the geometry and parallel to the Z-axis).
Internal longitudinal turning (under the geometry and parallel to the Z-axis).
In both of the above options, if the defined geometry does not intersect with the material boundary, it is extended by lines perpendicular to the Z-axis that are drawn from its ends up to the material boundary. In this manner, the area that has to be turned is defined.