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Learning metalworking, metalcraft.
Metal trade education. Hobbysmith.
THE BLACKSMITH SHOP: Hardening and Tempering, Toolmaking. Chapter XXIV, ch.24, Hardening and Tempering, Tool Making, Effects of carbon on steel, What is commonly known as carbon steel is a metal compossed of iron containing varying amounts of carbon., distinguish grades
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Working in Metals by Charles C. Sleffel