One clever strategy uses two ratchet straps to hold shelving that can encircle ... For circular columns, you'll need to ...

birch plywood treads that are progressively attached around the tree trunk with ratchet straps, so that the stairs can spiral up into the leafy canopy. Rubberized treads, and a railing made out of ...

All of the pieces in the collection are made solely of phenol-faced plywood held together with ratchet straps; no glue, no screws, just the tension of the ratchet on the wood. It is a system that ...