ill say thanks for that
im assuming this here fix applies to the plain, lone "thread milling" wizard, not just the nfs thing that im unlicensed for...cus it seems to have fixed it. slightly. its coming up with different toolpaths at least!
in my mind, it should stay in the centre of the hole when it plunges, then take a small arc OUT to the start point. (not IN!)
it definitely does not!
i swapped the plunge to occur after the initial moves instead of before, because i still havent found a tool that can rapid plunge 20mm into solid steel....
this is an issue. my method? start from 25mm up. single line run. stop when tool is in starting position. jog over back to centre of hole. plunge in the 25mm then rezero (-20). jog back to the required X coord with spindle running to start cut. go back to continuous run, hit start again
to elaborate. an M10*1.25, 20mm deep, 8mm tool (ground almost all the flutes off an 8mm tap!) RH internal thread.
the climb setting gives the nasty plunge into random places, followed by an arc to start position. conventional is fine.
anyway, i managed to rough it out and remembered i already had the right tap in one of those cheap and nasty kits i was given years ago. good enough as a chaser. i have a thread at last!
all this just to put a quick change TP on my lathe...
i wouldnt know where to start with coming up with one of these programs... the idea is easy, arcs combined with z moves, but yes....so many thanks just for writing it! cus the majority of it works
hijacking done