A company in Amsterdam invented these ingenious desks for their limited office space, but they’d also be great in a kids’ ...

So began his quest to design and fabricate plywood stools which use no glue for their joints. The Cambridge Makespace (in the UK) turns out to be a perfect environment for this type of project.

The legs had broken through the particleboard bottom. So first I had to attach a new plywood base, fill the chips and nicks, hide water damage and address other cosmetic work. The center panel ...