Investment casting is a manufacturing process used to create precise metal parts. It involves making a wax model of the desired shape, which is then coated with a ceramic material to form a mold. Once the mold is hardened, the wax is melted away, leaving a 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 to reveal 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.