Brian,
Before I used the HSS bit, I tried carbide threading inserts and
chipped two of them, the tiniest piece broke off the end. I had to
use a magnifier to see it but I heard when it happened. In your
opinion, would too slow a speed cause that?
Also, is the correct height at dead center, or a smidgeon above.
Jerry
PS The material is drill rod.
--- In mach1mach2cnc@..., "barker806" <barker1@m...>
wrote:
Wow
I think I may be a bit out there but I run about 2000 RPM for a
thread that small..
That is only about 325 FPM. That is SLOW for Carbide and you will
get
a better finish at that speed. We run the SECO threading inserts
and
that is what it calls for.
So the question is will it Thread at the Higher speeds? A crash at
that speed would not be good...
Have a good one.
Brian
