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Old 01-29-2020, 7:28 PM
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kendog4570 kendog4570 is offline
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Location: Oakhurst, CA
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All lathes will cut the thread pitch of the lead screw, and MULTIPLES of that pitch, when closing the half nuts any place on the screw.
Rule of thumb for closing half nuts:
Even No of threads/any line
Odd No of threads/any number
Multiples/any place

Not so sure about division numbers Example 8tpi lead screw/4tpi thread wont work on my lathe. Yours may be different.

8, 16, 32, 64,128, 256 works OK on mine. Haven't had the occasion to cut 128's or finer yet!
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