Just curious about this. I tried it just the other day, after cleaning
up the blade w/ Simple Green (had lots of pitch on it). Finished the
job by honing w/ a fine diamond file. I filed only the faces of the
carbide tips, three strokes each. Keeping a 90 deg. angle was easy.
The blade cut much better of course, but that may have been from the
cleaning, not the honing. I *think*
I could feel a sharper edge
afterwards, but that may have been wishful thinking. I don't think the
honing hurt anything, but it got me to thinking about the whole
attempt, and whether I could lure the cognoscentes on the Wreck to
weigh in with their opinions and experience.
The blade, BTW, was a middlin' Freud.
Please comment if you know anything about honing TS carbide.