Author Topic: Chisel Rehabilitation -- Setting the "finished" edge angle.  (Read 307 times)

Offline gwagner

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Chisel Rehabilitation -- Setting the "finished" edge angle.
« on: December 13, 2021, 04:20:11 pm »
I have a chisel that someone ground from the back side, so I must remove about 3 mm of metal before I get back to the flat on the back of the blade. As I grind the metal the edge angle will change. So if I start at 30 degrees and grind it all off I'll be at a much sharper angle when done.

Is there a trick or technique for setting the "finished edge angle" from the start, so that once all the bad material has been ground away I'll be at the 30 degrees I need?

Edit: Sorry -- when I saw the category of "planer blade" I thought of my carpenter's plane, which is a chisel blade. (I'll ask the question in the chisel category if I can find one.)
« Last Edit: December 13, 2021, 05:39:44 pm by gwagner »

Offline RickKrung

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Re: Chisel Rehabilitation -- Setting the "finished" edge angle.
« Reply #1 on: December 13, 2021, 05:53:19 pm »
Hand Tool Woodworking subforum...

I don't have an answer for you, but I caution regarding avoiding too much heat as it will destroy the temper necessary to hold and edge.  That would be particularly of concern with so much metal to remove, which would be much more effectively accomplished on a standard or slow speed bench grinder.  You'll be at it all day if you try it with a standard Tormek. 

Rick
Quality is like buying oats.  If you want nice clean, fresh oats, you must pay a fair price. However, if you can be satisfied with oats that have already been through the horse, that comes at a lower price.