[anoel]

I just finished converting my X axis on my Taig lathe to use a leadscrew and a stepper instead of the Rack and Pinion. I used a double shaft stepper and put a hand crank on the other side of the stepper so that I can use the Lathe manually.

I've got the spindle sensor set up so that I can use Turbo CNC for threading.

I've still got to add a stepper to the cross slide. I think that I know how I'm going to go about it. But we'll see....

Then a variable speed DC motor for the spindle comes next for low speed torque.

What I'm curious about is threading... What spindle speeds should I be looking at for threading? I don't expect to do much of anything any more coarse than 16tpi.

I'm still a good month out before I'm ready to really dig in with cnc lathe work so I'm just trying to get a grip on some more preplanning. to make sure that I'm not over looking anything critical.

Any advice from you guys that have done mini lathe CNC conversions is welcome.