The back of the bench consists of eight lengths of 1 x 6 pine that are set side by side vertically and sandwiched—top and bottom—between two horizontal 1x4 pine boards.
Cut eight vertical back pieces (B) from 1x6 pine, each 19 inches long.
Figure 2 shows the decorative pattern that is cut in each vertical back piece (B). Enlarge the pattern, trace it onto one of the vertical back pieces (B), and cut the board along the pattern lines. Use the resulting cut board to mark the same pattern on each of the remaining seven ver tical back pieces (B).
Be sure to use the first board you cut as the pattern for each subsequent back piece so that the resulting cuts will all be the same.
Sand each of the vertical back pieces (B) now because it will be difficult to sand them after the back is assembled.
Cut four horizontal back pieces (C) from 1x4 pine, each 45 inches long.
Set two of the horizontal back pieces (C) on a level work surface, placing them parallel to each other and with the inside edges 12 inches apart.
Lay the eight vertical back pieces (B) evenly spaced on top of the horizontal back pieces (C). As shown in Figure 3, the ends of the verticals (B) should be flush with the outer edges of the horizontals (C).
Attach the vertical back pieces (B) to the two horizontals (C) using glue and 1-1/4-inch-long screws. One screw in each end of each of the verticals (B) should be sufficient.
Place the remaining two horizontal back pieces (C) on top of the assembly, making sure to align them with the horizontals already attached. As shown in Figure 4, the verticals (B) are now sandwiched between the horizontals (C). Glue and screw the two unattached horizontal back pieces in place using eight 1-1/4-inch-long screws for each horizontal board. Place one screw over the center of each end of each of the verticals (B).