Double curvature

Objects with surfaces that curve in two directions (domes, spheres) are much harder to build than surfaces with surfaces which curve in only one direction (cylinders, cone). you can roll a sheet of paper into a cone but, you can’t fold paper onto the surface of a dome without creasing it.

The challenge of creating doubly curved, complex surface has always interested me and, working with three-dimensional software and writing a bit of code I’ve found a way of making objects from sheet steel that curve all over the place.

The latest of these is shown on the right – a doubly curved bowl that slots together from steel pieces. To fit together perfectly, the individual pieces are cut to an accuracy of just a tenth of a millimetre.

This bowl, and the rest in the series are available for sale from the We Are Birmingham shop.

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