|Forum topic by luthierwnc||posted 01-05-2016 06:40 PM||348 views||0 times favorited||5 replies|
01-05-2016 06:40 PM
I recently got a 10” (250 mm) wet grinder from Grizzly. After some setup, I’m getting a square, consistent hollow bevel on a pile of plane blades I recently got from Ebay/garage sales. Some of those were pretty rough* and this is actually the second step after electrolysis and truing on the bench grinder.
I’ve always used waterstones for the hand part of the process with a dead-flat (theoretically) primary bevel. With a 10” hollow from the Grizzly, I’m wondering how most folks go from there. My inclination is to reestablish the primary (or micro-bevel) on the fine grits and leave the relatively rougher section of the hollow alone. Not the mirror edge in the advertisements but I can’t see trying to polish the hollow if the edge is right.
There are lots of articles on roughing old blades and even more on the finishing steps but I haven’t seen anything on what to do in the middle if you use one of these or a Tormek wheel. Any thoughts will help. Thanks, Skip