An edge clamp is a type of woodworking clamp that is used to hold two pieces of wood together while they are being joined. It is designed to be attached to the edge of a workpiece and provide a strong and secure grip. An edge clamp typically consists of a long bar or beam that is equipped with a sliding jaw or clamp pad. The clamp pad is usually made of a soft material like rubber or plastic to prevent damage to the workpiece. The beam of the clamp can be adjusted to the desired length and then tightened down onto the edge of the workpiece using a screw or lever mechanism. This creates a strong and stable hold that keeps the workpieces from shifting or moving during the joining process.