inverted threading tool method

[Dan_S]

Maybe just as well change the lathe motor to VFD & figure out some sort of contact>ramp down>stop cycle. Unfortunately above my pay grade.

check out these threads:
https://www.hobby-machinist.com/threads/pm1340gt-lathe-threading-with-a-proximity-stop.45977/
https://www.hobby-machinist.com/threads/vfd-proximity-sensor-stop.32816/
https://www.hobby-machinist.com/thr...trol-system-with-proximity-stop-update.63426/

 

[petertha]

Now THAT is a beautiful thing! You know I recognize some of those posts & just assumed it was a straightforward VFD conversion without appreciating the limit stop function or seeing it in video actions. And my 14x40 is a similar distant Taiwan cousin of the same 1340 lathe. That would be so nice. The wiring looks intimidating though (coming from a guy who can solder & measure voltage...sometimes without letting magic smoke out).