hey all, i was wondering if anyone could help me out.
i have to single point a #6-32 thread on the OD of a 304 ss part, and its giving me TONS of grief. the insert nose is chipping out on the first part, and it seems to be forming the material, making the thread major diameter way oversize(.010)
I've tried a lot of different speeds and numbers of passes, from 15 passes at 1600 RPM to 6 or 8 passes at 2400 RPM, and there is no discernable difference... i;ve also tried changing the relief angle on my thread tool.

any help would be appreciated!!

thanks!