" wrote:

I bought a bunch of endmills from a machine shop going out of
business.
The seller told me some of them were carbide.
I saw some of them that were dull grey instead of shiny steel but they
were all magnetic.
Is tungsten carbide magnetic?
Engineman

Yup, spin them 400 fpm or so, do not over feed them. Do not used them in non-rigid
setups.

Wes