The hinged boxes of this bookcase by Korean furniture designer Lee Sehoon can be spun round to create a neat grid or a scattered circle (+ movie).
The Squaring bookcase is made from nine wooden boxes that can be rotated from a simple square into a circle of sloping boxes, finishing in a cross shape.
"Disequilibrium caused by different weights creates a new shape every single time," explains the designer.
See our top ten most popular bookcases here.
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