Lead in

This parameters define the lead in mode.

The different offered choices are :

Direct

The lead in toward the face is done by directly joining the current point of the tool path to the entry point.

Perpendicular

The lead in on the face is done perpendicularly.

Tangential

The lead in toward the face is done using a circular arc.

Angular

The lead in toward the face is done according to a segment which is positioned (with an angle) with regard to the curve.

Helical

The lead in toward the face is done using an helix.

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