Transfer your measurements to a sheet of 3/4" plywood and use a 4' level or straight edge to connect marks to make straight cutting lines. For this table, we cut one piece at 48" x 24" for the wall frame and a slightly smaller piece at 47" x 23" for the tabletop.
Build the Table Wall Frame
Use a circular saw to cut the table frame. Cut 1x4 pine boards to go around the table frame. Cut two board lengths at 48" long and two board lengths at 22-1/2" long.
Apply wood glue to the edges of the table frame plywood and attach the 48" boards first to the top and bottom, then the 22-1/2" sides to the perimeter using 1-5/8" screws.
Build the Table
This tabletop is made from a 47" x 23" piece of plywood. To avoid a flimsy tabletop, cut four pieces out of 2x2 pine boards and line the perimeter under the sheet of plywood. Our cuts are two pieces at 21-1/2" and two pieces at 47".
Apply wood glue to the edges of the plywood and attach the two 47" boards to the top and bottom, then the 21-1/2" sides using 1-5/8" screws.
Prep for Paint
Sand all edges of the frame and tabletop until smooth and fill in screw holes with wood putty.
Paint the Table
Lightly sand wood putty to make an even surface. Prime all parts of the table, but try to avoid getting paint on the piano hinge. When primer is dry, paint your table the desired color. For the best protection against spills, use semigloss or full-gloss paint.