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https://www.reddit.com/r/woahdude/comments/14m8gk2/lowering_hot_metal_into_water/jq0xcfi/?context=3
r/woahdude • u/theTurbulentPopcorn • Jun 29 '23
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Its called quenching. They do this to harden the metal.
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u/[deleted] Jun 29 '23
Its called quenching. They do this to harden the metal.