Gravity casting is a casting process in which molten metal is poured into a mold using the force of gravity. The molten metal is typically poured into the mold from above, and the metal fills the mold cavity due to the gravitational force. Gravity casting is often used to produce parts with complex shapes or thin walls, as it provides a smooth surface finish and reduces the risk of defects. This casting method is commonly used in the manufacturing of automotive parts, aerospace components, and household appliances.