Retract method.
There are four methods possible for the retract between each "depth" allowed
None
In that case, no lead out is done
Incremental
In that case, the lead out is done with an incremental value. This value is defined by the user with the "Retract" question.
The feed rate used for this lead out is defined by the feed rate or the current stage
Until the previous stage
In that case, the lead out is done until a specific value defined by the previous stage
The feed rate used for this lead out is defined by the feed rate or the current stage
Until stock diameter
In that case, the lead out is done until a specific value defined by the starting Z of the parting off
The feed rate used for this lead out is defined by the feed rate or the current stage
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