Theading away from the head stock.

[Ernest]

I have an older Taiwanese made lathe with screw on chucks. I really want to start doing threading away from the head stock to lower stress and to be able to thread ant higher speeds for smoother threads.

Every thing I study about this says you risk unscrewing the chuck while running the machine in reverse as is needed to thread away from the head stock. I certainly do not want to risk damaging my lathe but is there any way to pin or otherwise make it impossible for the chuck to unscrew. ?

thanks in advance for your advice.
Ernest

[John Taylor]

Drill a hole and tap it for a set screw in the side where it screws on. Mark the threads on the spindle and drill into it just enough so the set screw has a place to lock the chuck in place.