New sanding jig

JTknives

JTknives

Joined
Jun 11, 2006
Messages
8,650
well i came up with a new way to get a nice super flat hand sanded edge bevel. what i did was take a super strong flat magnet from a computer hd, its about 3/4" x 1 1/2" i then wraped sand paper tight around it. i then stuck it to a short pice of L6 steel i had laying around. i put it colse to the end so i could use the other end of the steel bar as a handle. i then put my blade on to the sandpaper and because of the magnet it snaps on tight. i thin rub the blade back and forth on the sand paper. the magnet keeps the blade flat on the edge bevel and keeps preshure on the blade so the paper cuts good.
 
Sounds neat. Just watch out for galling.As you go back and forth little balls of metal dust and grit roll up into bigger balls and start making scratches in the surface.The other problem with back and forth sanding is the "J" hook at the end of each sanding line.With galling this "J" gets real bad.Normally sanding in only one direction is preferable.
Stacy
 
Man, seems like a great idea... I'm eager to try it.

As far as hooks, I bet you could use the magnet trick all the way up to your second-to last grit, then rub them out with the final grit, couldn't you?
 
You may need a demagnitizer after using the magnet in that close proximity to the blade.

A great investment, for someone doing a lot of hand work, is the purchase of a large size diamond impregnated stone. The one I use is 4"x10",course and med. Use it the length of the blade. Secure the blade to a backer board and put the board in a vice. Grip the ends of the stone and run it long ways up and down the blade. Just keep flushing it with liquid so it does not gall the steel. You can maintain a flat grind that you can not produce on, say, a belt grinder. I do the rough grinding and part of the grinding after the heat treat with a 2x72 but still use this tecnique, especially, when putting flat grinds on big knives. Fred
 
Stacy,
They have had a lot of time to perfect their technique and demonstrate its usefullness. My interest in this came from reading the histories of the sword makers in Japan and other parts of the world. It is, humbling to read how it was done before power tools were invented. Boy, do we have it easy. Fred
 
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