Investment casting is a manufacturing process used to create precise metal parts. It involves creating a wax pattern of the desired shape, which is then coated with a ceramic material to form a mold. Once the mold is set, the wax is melted away, leaving a hollow cavity in the shape of the part. Next, molten metal is poured into the mold to fill the cavity. After the metal cools and solidifies, the mold is broken away, revealing the finished part. This method is known for producing complex shapes with high accuracy and a smooth surface finish, making it popular in industries like aerospace and automotive.