Some time ago, an Ace Hardware ad in American Woodworker sparked a surprising number of inquiries from readers. They all wanted to know how to build the cool-looking shelves that appeared in the background. We liked the shelves, too. Their contemporary design and invisible mounting created a dramatic effect.
The secret was torsion-box construction. A torsion box is a simple grid of slender ribs glued between thin plywood skins. It makes these shelves stiff and flat, yet incredibly light. This rigid architecture means torsion-box shelves won’t sag or twist, and they can be mounted without any external support.
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