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Hardening
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The process of harding the edge by rapidly
cooling in oil.
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We hold the scissor with tongs and put it into a furnace.
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Then we put it into the oil box to rapidly cool.
Then we change to the water box before the scissors cool down.
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Tempering
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The process is done again and we add it to the heat and adjust the hardness and strength of the steel.
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We put the scissor into the oil box.
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Then take it from the oil box and take off the oil.