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I Forge Iron

grinding a knife bevel


gearhartironwerks

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Surfing the web one evening, I came across a youtube video by Trollskyy on bevel grinding. This guy works with minimal homemade tooling and gets it done. Then, I saw a video by the Blind Horse Knife Factory doing flat grinding as well. A youtube search will get you there. The concept of grinding is the same in both, but the Blind Horse jig is more advanced.
So, being a geezer with a not so steady hand, I made a jig like the one in the Blind Horse vid and it works great! I'll post pics asap of the jig and grinder extension.
John Emmerling
www.gearhartironwerks.com

Some pics of the jig.

post-677-0-78947700-1390856598_thumb.jpgpost-677-0-44932600-1390856568_thumb.jpgpost-677-0-11954700-1390856584_thumb.jpg

I milled a 3/8" slot to hold the blade. The platen is tilted toward the backing plate, and I just drag the fixture across the platen using a push stick
near the blade tip. This is incredibly simple and easy to use.

John

http://www.gearhartironwerks.com

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I watched both vids. They make it look ridiculously simple; Especially the Russian! :) I made my table adjustable albeit wished I made it deeper. Now just 2" wide x 18"... Anyway, I also made a similar jig. I immediately was able to make scrap pieces with identical grinder marks on both sides. :ph34r:

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Trollsky is an incredibly bright man with many excellent videos on youtube. I made a couple of the jigs after watching his and other grinding jig vids a few months ago. Started with a wooden 2x4 and worked up to a 1.5 x 3 inch steel angle iron. The wider face rsets on the table. Made a much larger table for my KMG and these simple jigs are a huge help! I drilled the jigs and threaded the holes for 1/4 inch screws with lock nuts. To change the angle you just run the screw up or down and relock them. I left he bolst 3 inches long so ytou have a very stable place to hold while grinding.

Dave

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Good Job.

 

At some point I really must give this a go at grinding with a Jig.

 I have always ground free hand  with no table on the grinder. I do a good quick job of it... But I find my wrists hurting.

 I think a jig or two may ease up some of the pressure from keeping hands locked in place.....

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I have always done my grinding free hand too. I use a stick with a ledge cut into it to support the blade and lock my arms into my waist for support. I've never had trouble with my wrists from grinding , maybe the pushstick helps with that?

 

I did recently start using jigs for grinding small blades such as wood carving knives, the sort that are too fiddly to hold securely. It is a piece of angle iron and a small pair of vice grips. The work table can then be adjusted to give the correct angle. For these repetitive blades where I'll be grinding a dozen of identical angles the jig setup is ideal, but I find that grinding freehand for every other knife is just so much faster and more flexible :)

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