Quote Originally Posted by LawsonStone View Post
Maybe he's talking about something kinda like case-hardening? I don't know.
Not case hardening....
Just the local brush crew's preference for how
they liked their brush knives sharpened.

But, I have always wondered if a single bevel knife
could be improved by case hardening the flat
side. It might improve a mild steel knife but
a quality high carbon... not so much.