Place the four pieces of 1 x 8 inch lumber on a worktable and cut them to the length needed for your design. Measure from the ends of two of them and make marks 3/8 inch from the ends. Make the marks 1 inch from the long edges. Drill a pilot hole on the marks with a 1/16 inch drill bit.
Drill countersink holes on top of the pilot holes with a countersink drill bit. Do not drill the countersink holes deeper than 3/8 inch.
Apply glue to the ends of the two pieces without pilot holes. Put them between the wood with pilot holes and secure them through the pilot holes with 1¼ inch drywall screws. This is the frame for the Japanese coffee table.
Run a bead of glue around the edge of the perimeter of the frame. Cut the ¾ inch plywood so that it is larger than the base of the table but smaller than the intended size of the top. Secure it to the base with 6 penny finish nails.
Cut the four pieces of 2 x 12 inch lumber to the length needed for your design--consider a height that is comfortable. Set the table frame on top of the lumber and center it. Secure the frame to the 2 x 12 inch lumber top with 1¾ inch drywall screws.