Abstract: A woodworking machine for fastening together wood picture frames, cabinet doors, case goods, and the like, with joint nails driven into sawed kerfs. The machine combines the two operations of sawing the kerfs and inserting the joint nails. Workpieces to be joined are clamped to movable fixtures. Actuators move the workpiece fixtures apart to permit the entry of a rotary kerfing saw to cut kerfs in the facing surfaces to be joined. Other actuators move the kerfing saw into position and into the workpieces to cut the kerf, then withdraw the saw and move it back into a retracted position out of the way. The workpiece fixtures are then moved to bring the workpieces together so that the sawed kerfs become a single kerf ready to receive a joint nail. The workpiece fixtures may also move the workpieces forward, up to the nailing head. The nailing head then pushes a joint nail into the kerf, fastening the workpieces together.