On Fri, 8 Sep 2017 16:51:22 -0700, "Bob La Londe"
wrote:

I was thinking about picking up a silicone carbide "green stone" for
grinding carbide. In my milling operations I do generate a bit of broken
carbide. I was thinking if I could grind it to fit specialty tools made to
clamp or hold on the shaft sizes I might never need to buy another insert
again.

Will a standard star wheel dressing tool square up a green stone when it
gets worn?





A standard star wheel will dress a green stone. But If I was you I
wouldn't even consider using a green stone for grinding carbide. Use a
diamond wheel. They can be had cheap from China, will way outlast
silicon carbide, and they grind carbide to a much finer edge. Much,
much finer. Much, much, much finer. And much betterer too. Really. I
grind a lot of custom carbide tooling for use in my shop. I use
diamond abrasives exclusively for this.
Eric