mold

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Designing sand mold castings involves creating a pattern and a corresponding cavity in a sand mold. The pattern is made from wood, metal, or plastic and represents the final product's shape and size. Sand is packed around the pattern to form the mold, and the pattern is removed, leaving a cavity that matches the desired shape. Molten metal is then poured into this cavity, where it cools and hardens into the final product. This process can be used for various materials, including iron, steel, bronze, and aluminum.