Shell casting is a type of casting process that involves the use of a pre-coated sand mold to create a metal casting. The process involves heating the mold to a high temperature and then pouring molten metal into it. The mold is then allowed to cool and the metal solidifies, forming the desired shape. Shell casting is commonly used in the production of small to medium-sized metal parts, such as engine components, pump housings, and valve bodies. It is particularly well-suited for producing complex shapes with fine details and tight tolerances. The automotive, aerospace, and industrial equipment industries are among the primary users of shell casting. This process offers a number of advantages over other casting methods, including improved surface finish, dimensional accuracy, and reduced porosity.