This guide details the expert process of fabricating a mainspring for an 1812 Springfield Musket, as demonstrated by master gunsmith Mark Novak. It covers analyzing original springs, designing new geometry, shaping and welding spring steel, and critical heat treatment processes including hardening via quenching and tempering in a lead pot to achieve the correct tension and durability. The guide emphasizes avoiding stress risers and ensuring proper material properties through precise temperature control.
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