Lost foam casting is an advanced casting process where a foam pattern, typically made of polystyrene, is used to create a mold. The foam evaporates when molten metal is poured into the mold cavity, forming a precise metal casting. This method enables high dimensional accuracy, excellent surface finish, and the production of complex shapes with fewer defects. It is widely used for casting aluminum, cast iron, and other metals in automotive, machinery, and engineering industries. Lost foam casting reduces machining needs, lowers production costs, and is environmentally friendly due to minimal waste generation and recyclable materials. It is ideal for making engine blocks, manifolds, pump housings, and intricate components that demand precision and surface quality.