Quote Originally Posted by Donald Qualls
The most modern of the small lathes have "electronic lead screws" using shaft encoders on the spindle, counter/divider systems, and stepper motors driving the lead screw, to cut any thread, either metric or inch, that you can specify -- right or left hand, front or rear tool post, inside or outside. Need to cut a 28.6 tpi to match some bizarre non-metric thread found on something? No problem...
Donald..........never seen or heard of these.........anywhere on the net I can see one?

Clayton