This groove or dado exten g both sides and into the front, where the bottom tail should be low enou, 126 . so that the groove occurs within a tail of the corner joint to prevent the appearance of a gap, as in A and B, Figure 2.58. Lap dovetails are customarily used in drawer fronts, with sharply inclined pins to insure broad tails for greater resistance. The lowest pin in the drawer's back is cut without slope in order to accommodate the drawer bottom, The best way to cut the pins of a lap dovetail is first to bore out the waste, cleaning the corners with a chisel, since saw kerfs can be made only diagonally, to avoid cutting into the lap. Otherwise the procedure is the same as explained in Chapter 1 for the through dovetail. When a dovetail is glued, a piece of scrap is placed over the joint before it is lightly tapped into position, to avoid bruising or splitting the wood. Dovetails should never be tried for fit because this is liable to loosen them. In place of dovetails many drawers nowadays are assembled with rabbeted (R) front corners and with rabbeted or dadoed (D) rear corners, as shown in C, Figure 2.58. The rabbeted corners can be glued and nailed along the sides at the front and on both sides and back at the rear corners. As with the dovetail corner, the bottom is slid under the narrower back member along its grooves in sides and front, being bradded to the bottom edge of the back. The more satisfactory lock joint (L), or lock rabbet joint, already described in Chapter 1, is also illustrated. The matter of drawer slides (runs or runners) and guides is important to the Fig. 2.59. Drawer slides and guides. INDOOR FURNITURE CONSTRUCTION ] smooth operation of the drawer. As shown in A, Figure 2.59, if both the si: (5) and guides (G) are allowed to project about Vie in. above the rails beyond the stiles or posts or legs, much wear will be prevented. They she not, however, extend below the rails, thus interfering with the drawer beneatl its contents. A single piece is sometimes rabbeted as in detail B, to form t the slide and the guide. Center guides (see detail C) are a necessity for triangi or oddshaped drawers and preferred by many cabinetmakers for mediumsi drawers of regular shape. They can be used in pairs for large drawers. Cei guides are commonly notched or doweled into the rails so that their front e act as drawer stops above the rail, and being flush with the rail's underside, s< to hold down the drawer below. A dadoed strip (detail D) or parallel strips fastened to the bottom of the drawer, closely straddling the center guide. Drawers can be deepened by eliminating the rails between them. This is fected either by the use of side grooves that ride on guides in the cabinet's s (A, Figure 2,60), or by the use of projecting drawer bottoms that slidr beta Fig. 2.60. Drawers. pairs of guides as in B. Closing stops can be provided by dowels in the lower For easy fitting, lip drawers with rabbeted top and side edges that lap < the stiles and rails are often employed, since they conceal the joints and as stops, as in C.