[howardjones]

Hello. I am turning 5/16 OD 12L14 down to .166 dia. Then cutting 8-32 external threads. What speeds , feeds and how much material would I take per pass to avoid flexing the material? Have never cut threads this small.

[rcs60]

I think that the answer depends on how you are planning to cut the threads
single point --split up the turn and threads to to three passes

[howardjones]

Thanks for reply. I turned material from 5/16 dia to .166 in one pass. I cut the threads single point in 3 passes. Worked great.

[brucetamblyn]

Just cut the threads single point in 3 passes.
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