Step 15: Construct the shelf support assembly (M, N, O, P, R in Figure 6) using 1-1/4" x #6 wood screws.
TIP: Drill pilot holes for screws first to ease the assembly process.
Step 16: Mount the completed shelf support assembly (Figure 6) to the base assembly (Figure 2), using 1-1/4-inch x #8 wood screws. See Figures 6 & 7.
Step 17: Drill a 1/4-inch diameter by 1/2-inch deep hole, in a centered position, approximately 1/2-inch in from the back edge of the slide-out cutting board/shelf (part Q). Be sure this hole is in the TOP surface of the board. This protruding dowel will serve as a stop to keep shelf from pulling out completely. We'll glue this stop into position later.
Step 18: Cut the miters for the bottom shelf front, back and side rails (parts S & T). See Figure 8.
Step 19: Assemble the bottom shelf with 3/8-inch diameter x 1-inch long dowel pins and glue. NOTE: Be sure to apply a liberal coat of glue around all edges of the top (U) to prevent any moisture or spills from seeping into the laminate substrate. If you're planning to leave your Cart outdoors, use waterproof glue. See Figure 8.
Step 20: Attach the bottom shelf assembly you made in step 19 to the four legs (G) using 1-1/4-inch x #8 wood screws. We suggest that the shelf be positioned about 10-inch or so up from the bottoms of the legs. It's your choice. See Figure 9.