A Crowd Inflated This Bench by Hand. The Deformation Is What Holds It Up.

Zieta Studio's Whispers bench goes on show today at Material Matters, the materials fair that has moved to UNLOCKED Shoreditch for London Design Festival and runs until Thursday. The object began last year on Ludgate Hill, where members of the public gathered in the Fleet Street Quarter and inflated it themselves. Oskar Zieta's studio describes the crowd inflating and deforming a flat steel form alongside the artist, and in doing so stabilising it.

The method is FiDU, free inner pressure forming, which Zieta developed at ETH Zurich. Two sheets of steel are welded together along their edges, then air is pumped into the cavity until the flat shape swells into a volume. That swelling does the structural work. A flat sheet buckles under load and a deformed one resists it, so the ripples and creases running across the surface are what give the bench its stiffness. Zieta has demonstrated the principle in public with a bicycle pump and a rolled steel profile, the same profile he first inflated in the Madejski Garden at the V&A in 2010. His studio notes that moving only the inflation point, with the same material and the same pressure, yields a completely different object: “A whisper becomes a shout.”

So the designer wrote the starting conditions and let the material settle everything after that. Zieta calls it a controlled loss of control. Most manufacturing treats variation as a defect to be engineered out, which is why two of anything are supposed to arrive identical. What happens to the idea of a product line when the process guarantees that no two pieces can match?