—A groove must be plowed the full length of a piece to work it to advantage. Where a mortise-and-tenon joint is to be made in which the grooved surface is to become a part, the tenon must be so cut as to allow its filling the groove. The mortise should be cut before the groove is plowed. The tenon, after being worked the full width, is gaged from the face edge to a width equal to the length of the mortise and worked to that size. [Fig. 183].
Fig. 183.
Especial care must be taken in gluing up the frame that no glue shall get into the grooves or on the edges of the panel.
109. Rabbeting.
—[Fig. 184] shows a corner of a frame rabbeted to receive a glass. Rabbets are best worked with either a rabbet plane or the combination plane. In rabbeting across the grain the spur must be set parallel with the edges of the cutter.
Fig. 184.
Fig. 185.