Edge/torch quenching W1
Posted 19 May 2008 - 09:47 PM
I really only want about 1/8" of the edge of this blade to get hard.
So i was thinking of using a torch to heat only the edge, then quenching only the edge in water.
I was thinking of coating the whole blade with a thin wash of clay, just enough to keep it from oxydizing at all.
Does anyone think I may have sucess this way? Or might this cause the heated edge to split upon hardening?
Please keep in mind that this is a sashimi knife the will not get used very often, and only put to careful use cutting fish flesh. So I'm not interested in going for maximum toughness. I'm not worried about leaving the spine very soft or in it's annealed state.
Thanks for any advice.
Posted 20 May 2008 - 09:52 AM
Posted 20 May 2008 - 11:12 AM
Posted 20 May 2008 - 12:07 PM
Posted 20 May 2008 - 01:32 PM
Posted 20 May 2008 - 09:08 PM
I am worried about getting an even heat using a torch but i may try it on the shorter blade, using a map gass torch and moving it back and forth to try and heat just 1/8" or so along the edge. If thats not too dificult to evenly heat a thin area along the edge then i may try it on the longer blade.
I think i will try oil for a milder quench as well. Can anyone recommend a temperature to heat the oil to or just do it at room temp?
So... about doing this properly... sashimi knives are traditionally made by forge welding a piece of carbon steel along the edge of a larger piece of wrought iron. I have not any wrought iron, and even less of the skill necessary to forge weld a thin piece of carbon steel along another piece of anything.
So the quest towards gaining experience and practicing techniques continues... I'm still having fun at this.
Posted 21 May 2008 - 07:14 AM
Posted 21 May 2008 - 05:52 PM
Posted 22 May 2008 - 12:41 PM
Luckily, i have about 6 quarts of new 10w30 which had been sitting in a friends garage and he gave them to me after a recent (20year overdue) garage cleanout. Kind of an expensive quenchant, but i think this stuff had been sitting in his garage for nearly 20 years...
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