A coping saw is a type of saw used for cutting fairly tight curves or shapes in thin wood. It consists of a very thin, removable blade stretched between the ends of a U-shaped frame, to which the handle is attached. By turning the handle, the tension of the blade can be slackened or increased. The blade can be turned through any angle convenient for sawing. Normally it cuts on the pull stroke, but there are occasions when it is better to reverse the blade so that it cuts on the push. Coping saws are often used to cut moldings to create coped rather than miter joints.