As suggested at the beginning of this section, sand should be rammed into the aluminum tubing, after its ends have been plugged, and a concave groove equal to the diameter of the tubing should be routed in the edge of the bending disk of the jig, to prevent the tubing from flattening. The ends of the front legs are plugged and inserted into holes bored halfway through the seat. Screws from the top of the seat are then driven into the leg plugs. The rear of the seat is fastened to the upright member by chromiumheaded screws driven through the tubing. The seat can be padded and covered by Fig. 3.33. Aluminum chair. OUTDOOR FURNITURE a waterproof fabric tacked to the outside edge, which is then covered with a ch miumfmished strip of the type available for edging sinks or table tops. A pi of the same facric is hemmed and slipped over the back as illustrated. Fig. 3.34. Aluminum table. Aluminum Table. A handy aluminum table with shelf, to match the alu: num chair is simply constructed as indicated in Figure 3.34. Two pieces of tub are required with a total of four bends made on the same jig that was used the front legs of the chair. The top can be of waterproof plywood or of in. stock covered by linole or a resinbased composition. Its edges are bound with chromiumplated shelf tabletop edging. The shelf is screwed to the legs in the same manner as the back of the cb seats, by driving chromiumheaded screws through the tubing. Fro. 335 Umbrella table. Umbrella Table. For use with a beach umbrella whose staff pierces the cen of the table top, the metal table illustrated in Figure 3.35 can be constructed either aluminum tubing or electrical conduit. As will be noted in the drawing, 238 . legs have a more acute bend than used heretofore. They are plugged and screwed to the top in the usual manner. The crossed stretchers serve not only to strengthen the legs, but also to hold in place a section iin. pipe for supporting the lower end of the umbrella. As shown in the detail, each stretcher is bent halfway around the pipe as a jig. They are fastened one above the other by plugging the ends, filing them concave, and then screwing them to the legs. The waterproof plywood top has a iin. hole cut in its center to fit the umbrella shaft. Its edge is finished with metal banding and its top with inlaid linoleum, enamel, or matting that has been thoroughly sparvarnished. concrete furniture In the garden, around the swimming pool, or strategically located on the lawn, concrete benches, tables, sundials, birdbaths, or Aladdinlike urns will not only [ioint up the scene, but also successfully withstand the effects of weather throughout the years. Satisfactory concrete castings require no more than a normal degree of careful craftsmanship, with due regard for three fundamental requirements. The first is that of mixture, which, for the type of work under consideration is known as the "122 mix"-one part cement, mixed dry with two parts of sharp sand and two parts of clean aggregate or gravel containing pebbles not larger than in.