"Proctologically Violated©®" wrote in message
...
Ahm no 'spert, but...
I think you gotta *grind* carbide. Fwiu, that's how cutters/drills are
made
to begin with.
"Green wheels" are what we use to make lathe tools out of carbide blanks.
They wear very fast, but remove carbide relatively rapidly.

Folks use green wheels, but smart ones use diamond wheels. :-)

The problem with the "green wheels" is that they're not all that much harder
than the carbide, so it's tough on the wheels, the dust from which (silicon
carbide) is very bad for your health, to say nothing of the carbide dust.
The wheels tend to chip the carbide instead of cut it, so the end product
(your lathe tool) leaves a great deal to be desired.

For the OP------turning carbide isn't something that you'd do with success.
It's far too brittle and would chip instead of cut, leaving the trailing
edge a mess, assuming you could come up with a medium that would machine it
at all. It really should be ground with diamond or CBN wheels.

Harold