The Torsion Box
How to make strong, light and stable panels
Synopsis: Using a torsion box, you can make high-quality veneered furniture, curved panels, benches, shelves, and more, writes Ian J. Kirby, without a lot of weight yet ensuring strength and stability. He talks about more of the torsion box’s virtues, and he explains how to make a sample panel, how to join the core grid, how to handle surfaces and edges, joinery, wall mounting, and curved panels. Photos and illustrations leave little doubt in this course in torsion-box construction.
Suppose you wanted to make a low bench about 18 in. wide and 4 ft. long, cantilevered out from a wall with no supporting structure underneath. In solid wood, you’d have to use a plank 2 in. thick or thicker, so this simple bench would consume at least 12 bd. ft. of wood, and it would weigh 40 lb. or more. Then you’d have the devil’s own tussle figuring out…