Although a coping saw can be used in several situations, the most com­mon time it’s used is when coping inside corners of crown and base­board mouldings. Its thin, shallow blade allows for tight curves to be cut into the ends of the mould­ing, allowing mating pieces to fit together gap-free. The basic form of a coping saw includes a handle threaded onto a “U”-shaped metal frame. The blade gets positioned between the ends of the “U” frame. The blades have a pin installed in both ends (perpendicular to the blade) that’s accepted by two-pronged hooks at either end of the saw. Once the blade is positioned, the handle is rotated to add tension to the blade. The two-pronged hooks at either end of the “U” frame can rotate 360°, and some frames have detents at certain angles so both hooks are at the same angle. Sharp after-market blades will improve accuracy and quality of cut. Woodworkers and DIYers will use a coping saw to remove waste from dovetail joints, as well as other tasks around the workshop.