"Ed Huntress" wrote in message
. net...

Good luck, Jay.

Oh, I should have pointed out, as an aside, that there's a good chance
Starrett hardens these blocks by induction hardening. This part is a natural
for that process. You can get a hard surface, to a controlled depth, without
generating significant heat in the mass of the part.

But that's for controlled industrial production, with experiments and tests.

Ed Huntress