tip of the day-Scribing Grind Lines

R

RJ Martin

Joined
Oct 26, 1998
Messages
933
Guys: I'm sure you all know this one, but, if you don't, it's a goodie:
Use a vernier caliper to establish your grind lines doen the edge of your knife-if you want the edge .030 thick, and your steel is .190 thick, set the caliper at .080.

.190-.030=.160
.160/2=.080

Use one side of the blade to guide the caliper's "leg" and scribe your line. Then, repeat on the other side. True, these lines will be only as straight as your steel is flat and parallel, but, I've used it for years and it's worked great. I have also used a height gage and a surface plate, but, I like this way better.
Oh-buy the best caliper you can find, and, sharpen the points on it if needed.

RJ Martin
 
Allen:


Everytime I read your .02 worth, I come away with $$$$ worth of advice. You are the kind of guy we all wished lived next door. So much to learn from you.

Marcel

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Randy,
That is also my method. I use set of vernier calipers I bought at Wholesale Tool for $18. They are made in Poland, and are hardened. Been using them for the last two years.


Another tip (you probably know this one already): is to disc grind the edges of the blank so that the scratches go across the edge. Makes it easier to see the scribed lines.


Another tip: use a drafting table light at your belt grinder so you can see the light refract in the scribed line. Makes it much easier to see.

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Lynn Griffith-Knifemaker

BG-42 is now an option

griffithknives.com
GriffithKN@aol.com
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I bought one of those edge scribes from K&G. Waste of time!!!!! It's so small, it's hard to hold and get a straight line. I'm gonna try the calipers, RJ! Thanks!! Michael

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"Always think of your fellow knife makers as partners in the search for the perfect blade, not as people trying to compete with you and your work!"

 
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