Mark and scribe a line about 1/4" from the edge. Bevel it to that line, leaving a tiny amount of the cutting edge flat as a reference for your final edge, and check the angle. You should be close. Scribe another line 1/16" from the first and regrind if it is not right. Continue like this until you reach an acceptable angle.
Originally Posted by salvageclaus
Use a 40 or 60 grit flap disk to grind your angle. It will give you good control and a smooth finish. Finish lightly with a 120 grit flap disk to remove any scratches from the other disk(s) and to sneek up on your final line.
From what I know of "froes" the angle is not critical and it is intentionally a little dull. It is sort of like the edge on a hatchet or splitting wedge. It is there to get in between the fibers of the wood when you first hit it, nothing more. Once the blade is in a few inches, the rest of the split is a twisting motion with the handle.
HH187, TA 185 AC/DC Arcmaster, Hypertherm Powermax 380 Plasma
Smithy 1220 LX Lathe
Peter Wright 132 (198lbs) anvil
Hoods: Jackson Nexgen and Hobart/Miller XLi
Victor compatible med duty OA setup
Chop Saw, 4x6 Band Saw