Temper lines

R

Rick Leeson

Joined
May 20, 2000
Messages
198
I heat up about 1/3 of the width (cutting edge & up) on my knife blades with a rosebud. Following the quench I always have a nice crisp line between metal which was critical hot and metal that wasn't hot.

Is this the line people are refering to as a temper line? If so, why isn't it called a quench line as it has nothing to do with tempering?

BlacksmithRick@aol.com
 
Rick
Some people like myself bring the whole blade up to austinizing temp them quench the whole blade. We then draw or temper from the spine of the blade down 2/3 of the way to the edge. Thus the name temper line. Even on forged blades or 5160 or 52100 I feel more confident heat treating my blades in molten salts then marquenching in molten salt than I do if I was just to torch or forge heat the edge to temp then quench.
Same outcome just a diferent way of doing it. You should do it the way you feel the most confident with no one way is right or wrong.

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Robert
Flat Land Knife Works
rdblad@telusplanet.net
http://members.tripod.com/knifeworks/index.html
 
I think Hamon means TEMPER LINE
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heh heh heh... (Hamon, hamoff, hamon, hamoff Daniel-san)
 
Ha= edge, Mon= name. This is in reference to the name of the pattern created by japanese differential thermal treatment.
Hope this helps.

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Oz

"Well, I gotta tell ya; I'd be very, very careful who you talk to about that, cause the person who wrote that, is dangerous. And this buttoned down, Oxford cloth psycho might just snap and stalk from office to office with an Armalite AR-10 carbine gas powered semiautomatic weapon, pumping round after round into colleague and coworker. This could be someone you've known for years. Someone very, very close to you."
http://www.freespeech.org/oz/
 
Hello,

Just remember to use a magnet to test for critical temperature or you will have a nice hamon bladed knife that doesnt cut to great.

Allen

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Allen Blade
Spokane,WA USA

" You can make great knives and sell a few, Or make Great AFFORDABLE knives and sell many"
WEB SITE : http://hometown.aol.com/bladecutlery/index.html
 
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