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Step 1: Assemble the Inner Box

Clamp a framing square on the workbench to keep construction square, butt the ends against the top and base, securing with wood glue and 1-in. brads or nails. Position the back and secure with 1-in. brads or nails 1/4-in. from the edge.

Step 2: Secure the Outer Layer

Apply wood glue in a zigzag to the top and base of the box; then, position the outer top and base, aligning them flush with the front, securing at the ends and back and clamping along the open front. When dry, secure the outer end panels.

Box Shelves Diagram[+]

Step 3: Apply Filler, Prime and Paint

  • Filler. Fill the plywood edges with fast-drying wood filler, working it into the end-grain holes and covering nail heads. Smooth the filler with 120-grit then 180-grit abrasive paper, slightly rounding all the edges.
  • Primer. Prime the inside corners with a paintbrush then use a foam or sponge roller for a smooth finish on the rest of the box. When dry, smooth the primer lightly with 180-grit abrasive paper.
  • Paint. Apply two coats of gloss acrylic latex paint.

Step 4: Secure to the Wall

The sturdiness of the shelves partly relies on securing the boxes to at least two wall studs to support the weight.

Use painter's tape to outline the box on the wall and mark the studs, then mark the studs on the box and drill 1/8-in. pilot holes through the back. Position the box on the outline and secure into each stud with at least two #10 x 3-in. screws near the top and two at the base.

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How to Build Box Shelves

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