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Sand casting is one of the oldest and most widely used casting processes in the manufacturing industry. It involves creating a mold from sand and then pouring molten grey cast iron into the mold cavity. The process begins with the preparation of a mold, which consists of two halves the cope (upper half) and the drag (lower half). The sand is mixed with a binder, usually clay, and water to create a mold that can hold its shape when the molten metal is poured.