To build floating shelves, cut a hollowed door, and install it over a wooden cleat. You need a hollowed door, a 2-inch-by-4-inch board, lag screws, wood glue and brad nails.Continue Reading
Use a stud finder, pencil and 4-foot level to trace a horizontal line that matches the length of the hollow door you're using. Mark the spots where the studs are along the line.
Attach a 40-tooth carbide blade to a circular saw. Cut the door to your desired width.
Measure the length and width of the hollowed area of the door. Cut a cleat out of a piece of 2-inch-by-4-inch wood that matches the dimensions.
Drill holes that are 1/4 inch in diameter into each marked stud.
Attach a 1/8-inch bit to the drill, and hold the cleat straight along the drawn line. Drill holes through the cleat and into each pre-drilled hole.
Use a ratchet to install a lag screw into each hole.
Use a chisel to file down each corrugated cardboard core at least 1 1/2 inches deep.
Place the shelf over the cleat on the wall to ensure that it fits. Make adjustments accordingly.
Apply wood glue along the top of the cleat and the inner bottom of the shelf, and install the shelf on the cleat.
Install nails at the back of the shelf that go through the shelf and into the cleat. Space the nails 8 inches apart.