mold
technology
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Also known as: cavity, die forming, mould
Written and fact-checked by The Editors of Encyclopaedia Britannica
- Also spelled:
- Mould
mold, inmanufacturing, a cavity ormatrix in which a fluid orplastic substance is shaped into a desired finished product. A molten substance, such asmetal, or a plastic substance is poured or forced into a mold and allowed to harden. Molds are made of a wide variety of materials, depending on the application; sand is frequently used for metalcasting, hardened steel for molds for plastic materials, and plaster for various purposes.See alsoinvestment casting;lost-wax process.