Casting

In metalworking and jewelry making, casting is a process in which a liquid metal is delivered into a mold that contains a negative impression of the intended shape. The metal is poured into the mold through a hollow channel called a sprue. The metal and mold are then cooled, and the metal part is extracted.

Casting is most often used for making complex shapes that would be difficult or uneconomical to make by other methods.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY 3.0

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