A relatively small The machined recess in a die that gives the forging its shape. containing part or all of the A cavity, or series of cavities (multiple), machined into a forging die to produce a desired configuration in the workpiece during forging. of a The process of working metal to a desired shape by impact or pressure in hammers, forging machines (upsetters), presses, rolls, and related forming equipment., and which is fitted to the Wood, metal or plastic reproduction of a proposed forged shape, used to control cutters on tracer-controlled die sinking equipment. The machined recess in a die that gives the forging its shape. The forging operation in which metal is progressively formed to general desired shape and contour by means of an impression die (used when only one block operation is scheduled). by means of a key.