Diamond or silicon carbide might do it.
(
FeralCatMan Unusual disease collector., Wed 8 Apr 2015, 20:08,
Reply)
Diamond it is at the factory.
But you usually use wet stones with regular steel and it's just fiiiiine.
(
omnitruncatedkraken from Empire Algol, Wed 8 Apr 2015, 23:03,
Reply)