How to build a triangular-shaped wooden box

Updated February 21, 2017

Triangular-shaped wooden boxes are traditionally used to hold folded memorial flags. Although many companies make custom flag boxes, it can be more meaningful to make your own handmade triangular box to symbolise your feelings for the person being honoured. You can make a box out of basic building materials, including wood, nails and hinges.

Place one of the rectangles against one of the triangles, lining up their longest sides. Position the pieces in a perpendicular manner.

Nail the two pieces together.

Place the second rectangle against a different side of the triangle in the same manner.

Nail the second rectangle to the triangle.

Place the remaining rectangle against the last remaining side of the triangle in the same perpendicular manner as the other two.

Nail the remaining rectangle into place.

Sand the entire box and the remaining triangle with a fine-grade sandpaper using small, circular motions. Make sure to sand all of the edges and corners.

Wipe off any wood dust with a flannel.

Place the remaining triangle onto the open side of the box. This will be the lid of the box.

Open two hinges, and place them along one side of the box and lid.

Tack the hinges onto the box and lid.

Paint the triangular box with acrylic paint.

Allow the paint to dry completely before placing the memorial flag inside it.

Things You'll Need

  • 2 triangle wood pieces measuring 60 cm (24 inches) on each side, 1.2 cm (1/2 inch) thick
  • 3 rectangles measuring 60 cm (24 inches) long by 10 cm (4 inches) high, 1.2 cm (1/2 inch) thick
  • 2 hinges with tacks
  • Small nails
  • Hammer
  • Sandpaper
  • Acrylic paint
  • Paintbrush
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