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I have tried searching but cannot seem to find what I'm  looking for. I am getting ready to convert my little 9x20 lathe to CNC and am trying to find out if lathe threading can be done with a single index pulse only.  Basically I would make an index plat with only one hole in it and use an optical sensor for the trigger. Is this possible in LinuxCNC, and could anyone point me to an example?

Thanks,
John Brannen