Put on your safety glasses and dust mask. Cut 2X4s for the frame. The size depends on how large you want the box.
Carve the tenon joints and the mortise joints on the ends of the 2X4 framing pieces. Use a dado blade to cut the tenon joints. To carve the mortise joints, use either a drill press or a band saw.
Cut sidepieces out of beadboard. They need to be 7-3/4 inches wide and the length needs to be cut to your desired length.
Put wood glue along the tenons. Tap the pieces together.
Slide the beadboard sections into the grooves you cut inside of the pieces. Tap the final frame piece into place. To avoid damaging the toy box frame, use a hammer and a scrap piece of wood.
Using finishing nails and the pneumatic nailer, finish the end pieces to hold them together.
Repeating steps 1 through 6, assemble the front and back pieces.
Attach all four sides with 3-inch screws.
Using the pneumatic nailer, attach cleats around the bottom.
Attach the ½-inch plywood bottom to the cleats.
Cut the foam to the same size as the lid.
Apply wood glue to the top and place the foam on top. Allow to dry.
Prime and paint or stain the toy box any color you desire.
Cover the foam with cloth. Wrap the cloth over the edges and hold in place tightly over the foam, securing with a staple gun.
Attach the piano hinge to the lid using the supplied screws. Be careful not to strip the screws.
Attach the lid support to keep the lid from slamming.