12-07-2017, 09:09 PM
I just purchased a pre-1960 Stanley plane at an auction. Dug it back out and looked at the blade with a loop. It's dull for sure (400 to 780 BESS) and those measurements tell me the edge is probably rolled in spots or probably just rolled worse in some spots than others. If it was a just sharpened edge I'd say it had lots of burr on it. The edge isn't rolled badly all the way across that I can see but where I can it sure seems to be rolled toward the bevel side. When I put on the strop it drags worse on the bevel side than the flat side. I'm going to take it to work tomorrow where we have digital microscopes and have a look. If I can get a picture that shows something I'll put it up here tomorrow night.