Jeff Dantzler writes:

That's 404 (i.e., FNF) steel. Not very useful.

Can you elaborate? I'm not finding much with google. It is not
stainless.

Why is it not useful? What does FNF stand for?

File not found.

I think you meant:

http://www.drizzle.com/~dantzler/ima...op/cutters.JPG

Looks like you got some huge horizontal mill tooling. I wouldn't expect
the bodies to be "tool steel", though, if they hold carbide inserts. if we
mean the same thing by "tool steel", as in, high-speed steel.