Sand casting is one of the most common metal casting processes, and it is the most versatile metal casting process.Sand casting mould is made from a sand mixture and of two halves. Two halves are contained inside a flask box, molten metal is poured into a sand mould cavity, where it solidifies to form the cavity shape part.

Sand casting generally have a rough surface sometimes with surface variations. Medium to large parts such as valve bodies, crankshafts and engine blocks are typically manufactured by this process. The dimensional accuracy and surface finish of the casting depend on the type of sand and the moulding process.