Knock-down stool

An ongoing experiment: a solid timber stool held together by wedges alone, that ships in a shoebox.

Sample content Stool, line drawing

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The problem

Can a stool be rigid, repairable and flat-packed without a single screw?

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Through-tenons locked with tapered wedges, a joint used in traditional workbenches.

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Four prototypes so far. The current version holds 150 kg but the wedges loosen after a few weeks of daily use.

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We are now testing wedge angles and timber moisture content to stop the loosening. This page will be updated as the experiment continues.