SB 9" machining in reverse rotation

[trg-s338]

What propositions or actual solutions have been put forward to the problem of the chuck unwinding when machining in reverse rotation such as threading in reverse and to the right?

 

[GK1918]

Only thing I can say when machining in reverse, Is that in the past I have used a threaded rod with
large washers, from the chuck thru the headstock like a collet closer, and use the dead center. As
far a threading, thats only light cuts.