tangential knife along multiple layer height

@MennilTossFlykune,

Very nice contribution!
The planner could add these z motion steps too. And additional steps if needed.

Maybe someone is interested to write a paper how the tangential module should work within linuxcnc
in a nice TANGENTIAL.md file, that can be included with the source.

Then i can just read the paper and tranfer the workflow into code.

You could look at how myCNC works:
https://www.youtube.com/watch?v=zcrRAU9BJ0E
docs.pv-automation.com/quickstart/mycnc-...ngential-knife-setup
It adds the rotations and retracts automatically without touching the G-code, like how you were thinking.

EdingCNC works the same way:

Tangential knife, you need to program only X.Y coordinates and the tangential knife follows, also in circles and lifts automatically up when needed.