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Claying-A Method of Differential Hardening

This is a discussion on Claying-A Method of Differential Hardening within the Blacksmithin' forums, part of the Blacksmithing category; YOu see it about 7 minutes into this video. It is a method of differential hardening. The Samurai used it ...


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Old 11-24-2007, 07:22 PM
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Default Claying-A Method of Differential Hardening

YOu see it about 7 minutes into this video. It is a method of differential hardening. The Samurai used it for their sword blades. Anyone done this? Has it been used for purposes other than swords?

YouTube - The traditional Making of a Samurai Sword (Katana)
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Old 11-24-2007, 09:30 PM
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Yes you can use it on any basic shallow hardening steel I have my own way of doing clay hardening i use furnace cement. I did not watch the video because of my stinking dial up but here is a knife i made using my way.

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Old 11-24-2007, 10:33 PM
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I think all swords must be treated in this manner. .

maybe not huge spring steel greatswords. . but most of em ...especially knives. .
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