A common practice, to avoid the use of such necessarily long screws, is that of pocketscrewing, as pictured in A of Figure 2.24. Angle irons can be profitably resorted to where Fig. 2.24. Table top fasteners: A, Pocket screwing. B, Mortise fastener. C, Sliding lug. D, Rail dovetailed into post and rail. complete concealment is assured, or mortise fasteners (shown in B) can be mortised into the tops of the table legs or aprons and screwed. The top of the mortise is left extending outward to provide a housing for short screws into the table top, thus permitting a swiveling action during shrinkage. The lug pictured in ะก is likewise allowed to slide in its slot if the top shrinks. The usual practice in good cabinetmaking is to connect rails to legs by means of lapped dovetails as shown in detail D. Narrow rails of this type are common in commodes, bureaus, chiffoniers, and desks, whose tops can be secured by means of mediumsized screws through the rails. Legs. In addition to square legs there are, in general, four divergent forms in common use, the tapered leg, the rounded leg, the turned leg, and the cabriole leg. Tapered legs may have two sides slanted, or all four. The symmetry of a tapered leg depends upon an accurate layout on the original squared stock. The amount of taper having been determined, the horizontal distance is marked at the foot of both edges of one side of the leg. With a straightedge these marks are connected with .their corresponding upper (thick) corners. The same is done on the opposite side to insure uniformity as the taper is planed, or bandsawed and planed down to the lines on both sides of the leg. Such a leg is set in a piece of furniture with the tapered sides inward, to suggest a splayed effect from the front. A continuation of the marking and cutting processes on the other side will produce a graceful leg tapering on all four sides. Rounded legs can be produced with hand tools by beveling the edges of square legs into octagonal cross sections and planing, spokeshaving, filing, and sanding the edges until cylinders result. Turned legs are produced on a lathe in designs varying from the very simple to richly ornate. INDOOR FURNITURE CONSTRUCTION Cabriole legs at first glance appear difficult of manufacture. They are not h to produce, however, provided it is always remembered that a single pattern templet is to be used for both sides. Hence the original stock must be wide enoi to accommodate the maximum curve of the templet in both directions, see Fig 2.25 Fig. 2.25. Cabriole leg. After the pattern is laid out on one side, the stock is bandsawed or cut 01 with a compass saw, then spokeshaved, filed, and sanded smooth. The same proce: is repeated on the other side and the resulting cabriole leg is smoothed dow to a gracefully finished product. Reeding. Reeding is a carving process frequently applied to turned legs resulting in a series of equal, convex, longitudinal divisions, or "reeds.