i scored a small box of HSS squares and rounds at a local auction..
some of them are marked "HSS"
some of them are marked "HSS-Co"
and some of them are marked "KK"
anyone have *ANY* idea what KK might be?
it looks just like HSS ... the grain
looks a little longer.. but thats the
only stretch i can make in describing
they're stamped with dimensions just
like the other HSS stock (10x10x200mm)
i'll be using these for grinding lathe tooling.