Reply To: Keeping cutting edge square when freehand sharpening chisels & plane blades.
Welcome! / Forums / General Woodworking Discussions / Woodworking Methods and Techniques / Keeping cutting edge square when freehand sharpening chisels & plane blades. / Reply To: Keeping cutting edge square when freehand sharpening chisels & plane blades.
I have seen a very simple method for slightly (but seriously) out of angle or out of shape edges: Use a stationary disk grinder, rest the blade on the table of the grinder and push it against the disk. Of course, this is very hard on the abrasive, so push lightly only and consider, which corner will touch the disk first. If the upper corner touches first and the disk is moving down there, you will get trouble.
I have re-squared some chisels from flea markets on my stones. First, I used a very high angle while abrading on the bevel side and watching my progress on the back of the chisel. Once the back was square again, I rebuilt the bevel.
This took a lot of time, and if you have a power grinder, I think, there is no reason not to use it. Only be careful not to overheat the blade.
By the way, I correct my blades whenever I have the time. It seems, that all my chisels get shorter on the same side, so it is part of my sharpening routine and will always get worse if I don’t take care of it. I can’t see it, when I sharpen once, but after 10 times or so, it gets visible.
Dieter