Wedge

A wedge is a simple tool used in ancient construction and processing techniques to split or shape materials such as stone, wood, or metal. It consists of a triangular, tapered piece made of a hard material, such as stone, bronze, or iron, with a thick base and a pointed end. When driven into a material, usually with a hammer or mallet, the wedge exerts force that spreads the material apart along a natural or induced crack.