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Compound Die Making

Compound dies, is a type of die that has the die block (matrix) mounted on a punch plate with perforators in the upper die with the inner punch mounted in the lower die set. Compound dies are simpler dies, often used when the quantities of parts produced don't warrant the expense of a progressive die. Compound dies can be large or small to handle varying thicknesses of metal--big and heavy duty for thick gauge metal; smaller for components. It is also an inverted type of blanking die that punches upwards, leaving the part sitting on the lower punch (after being shed from the upper matrix on the press return stroke) instead of blanking the part through. A compound die allows the cutting of internal and external part features on a single press stroke.