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What Does Hardening A Blade Do? [Solved]

Differential hardening is a method used in heat treating swords and knives to increase the hardness of the edge without making the whole blade brittle. To achieve this, the edge is cooled faster than the spine by adding a heat insulator to the spine before quenching. Clay or another material is used for insulation.

Heat Treatment -The Science of Forging (feat. Alec Steele)

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How To Heat Treat A Knife | The 4 Steps You NEED To Know

Knife

HOW TO HARDEN A KNIFE BLADE

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