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How to Build a Wooden Seat Box

Updated February 21, 2017

Seat boxes are an ideal combination of form and function: you have the seat on which to sit, by a window or in a cosy corner, with the added benefit of hidden storage inside the box. Making a seat box does not require you to be an expert carpenter and if you take your measurements before buying your wood, the timber yard or building supply store will usually cut it to size - meaning that the only thing left to do is assemble the box and enjoy.

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  1. Place the 58 inch ply piece on your work surface - this is the base and will make a two person seat box. Run a line of glue along the 30 inch edges of the base, then position the 30 inch edges of the two 30 by 35 ply pieces at right angles to the base, one on either end, clamping them in position. Let dry.

  2. Hammer a nail every two inches through the glued joint of the two 30 inch sides, then take off the clamps.

  3. Run a line of glue along the exposed, vertical 35 inch sides of the attached box ends, and the horizontal exposed sides of the base. Position the two 60 inch pieces of ply, for the box sides, so they are flush with the side end pieces and the base, forming a rectangular box. Clamp them in position and let dry.

  4. Hammer a nail every two inches through the glued joints between the sides of the box and the end pieces and between the sides of the box and the base. Take off the clamps, then fill any exposed nail holes with wood putty, scraping the putty on top of the nail head, leaving an even surface with the nails disguised. Let dry.

  5. Position the piano hinge - a long, continuous hinge piece - centred on one edge of the remaining 62 inch ply piece, the lid of the box. Screw the hinge in place along the edge of the lid, then position the lid over the box, again, making sure it is centred, before screwing it into one side edge of the box. You will now have a box seat with a lid that lifts and has a one inch lip over the sides and front of the box.

  6. Sand the box thoroughly, paying special attention to the lid, rounding off any sharp edges on the lip of the lid. Paint or varnish as desired, then let dry before positioning in your chosen location.

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Things You'll Need

  • 1 plywood piece, 58 by 30 by 1 inch
  • 2 plywood pieces, 35 by 30 by 1 inch
  • Wood glue
  • Corner clamp
  • Nails
  • Hammer
  • 2 plywood pieces, 60 by 35 by 1 inch
  • Wood putty
  • Putty knife
  • 1 plywood piece, 62 by 31 by 1 inch
  • Piano hinge
  • Drill
  • Screws
  • Sandpaper/sander
  • Varnish/paint
  • Paintbrush

About the Author

B.T. Alo is media director, chief writer and editor for a U.S.-based marketing and consulting firm. He holds a bachelor's degree in business and communications. Alo's interests include business, investments, electronics, personal finance, health, communication, popular trends and travel.

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