Michael, I recently made a scrub blade and had good results with the
following procedure. First I established the radius on the blade. I did
this by grinding the blade perpendicular to the grinder (i.e. don't
worry about grinding a bevel yet.) When I had a radius that I liked, I
then ground the bevel. Mind you, I had great difficulty avoiding drawing
the temper when I got close to establishing an edge. Fortunately for us
that grind our own scrub blades, it's simple to regrind the radius to
remove burnt metal. So give it a shot and proceed *slowly* when you get
close to establishing an edge. The more work you do on the grinder, the
simpler it'll be to hone into a wood-hungry scrub blade. Hope this
helps. -Andy