full-mold casting

Full-mold casting is a precision-casting technique where molten metal is poured into a mold cavity shaped like the desired object. This mold is typically made from sand and clay, though other materials can be used. A pattern, often made of wood, metal, or resin, is used to create the mold cavity. For full-mold casting specifically, a pattern made of expanded polystyrene is used. This foam pattern remains in the mold and evaporates when the molten metal is poured in, leaving the metal to solidify into the exact shape of the pattern. This method is particularly useful for creating complex shapes with intricate details, and it is employed in the production of items like jewelry, sculptures, and industrial parts.1234