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Runner : A channel through which molten metal or slag is passed from one receptacle to another; in a mold, the portion of the gate assembly that connects the downgate or sprue with the casting ingate or riser. The term also applies to similar portions of master patterns, pattern dies, patterns, investment molds and finished castings.Riser : Reservoir of molten metal from which casting feeds as it shrinks during solidification.

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13y ago

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