Am open to suggestions on the control software . Had a look at the lathe function in Cambam and it left me puzzled.

The TCL has an optical encoder so hope I can use that. it does however tie into the processor board so may also have to keep that.
The outputs to the Lenze contoller are also taken from that board so may be simpler to retain it than to fix up an alternative speed control but I have yet to fathom that function.

It only recently dawned on me that spindle speed and Z traverse have to be perfectly coordinated for say screwcutting!

Would be pleased to have someone hold my hand on this. The published diagrams from Boxford are not great and there is no real useful guidance in the manuals .