Historical information
A coping saw is a type of hand saw used to cut intricate external shapes and interior cutouts in woodworking or carpentry. It is widely used to cut mouldings to create coped rather than miter joints. It is occasionally used to create fretwork though it is not able to match a fretsaw in intricacy of cut, particularly in thin materials. Coping saw blades are always thicker and much coarser cutting than typical fretsaw blades.
A coping saw consists of a thin, hardened steel blade, stretched between the ends of a square, c-shaped, springy-iron frame to which a handle is attached. The blade is easily removed from the frame so that the blade can be passed through a drilled hole in the middle of a piece of wood. The frame is then re-attached to the blade and the cut starts from the middle of the piece. Long cuts perpendicular to the edge of the material are possible but the shallow depth of the frame rather limits how far from the edge one may cut. The much deeper frame of the fretsaw is more useful for cutting well away from the edge but conversely cannot manage the thicker materials commonly cut by the coping saws.
The coping saw blade is installed with the teeth pointing towards the handle. Unlike a hacksaw, which has the teeth pointed away from the handle, the coping saw cuts on the pull stroke. The coping saw blade is removable by partially unscrewing the handle. The blade is prevented from rotating by means of the short, steady bar provided where the blade is attached. Loosening the handle also allows the blade to be rotated relative to the frame as desired. Carefully aligning the finger steady bars at the top and bottom of the blade ensures that the thin blade is straight and not twisted along its length. Re-tightening the handle tensions the blade and locks it at the desired angle relative to the frame. The short steady bar nearest the handle is held securely between finger and thumb while the handle is tightened to ensure the blade remains at the desired angle. Unlike the fretsaw the coping saw blade has holding pins which lock securely into the angled slots of the rotatable blade holders.
Gentle curves are achieved by slowly turning the whole frame by means of the handle while continuing to cut steadily.
Physical description
A coping saw with wooden handle but no blade
