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Forging
From WikiPedalia
Forging is a process of forming metal parts by the use of heat and pressure. Forging develops a grain structure in the metal, making it stronger in the direction that it has been stretched. Forging is done in special molds called "dies", and when the dies are properly designed to take advantage of the grain structure introduced by the forging process, the resulting parts are stronger in the important directions than those manufactured by CNC machining
See also Jeff del Papa's article on Forging, Casting & CNC Machining on this site.
