SJ wrote:
It would be relatively easy to single point a 4-start thread on a CNC lathe
with a C-axis, but not having access to one, how would you cut a 4-start
1/4"-20 thread on a manual small lathe (like the mini-lathe)?

Thanks,
Sam




With a dog and a four slot faceplate or chuck. Set the part on centers
and move the dog 90 deg in the chuck or faceplate for each thread.

John