Tables and chairs that self-assemble from 3D-printed wood could spell an end to the nightmare of trying to assemble flat-pack furniture. Scientists in Israel have created a printable'wood ink' that can be programmed to morph into complex shapes as it dries, like domes, helices and even Pringle shapes. The experts have so far printed designs that are only a few inches long, but they aim to produce much larger objects, like chairs, tables and shelves. In the future, large wooden products could be shipped flat to a destination and then dried by the customer to form the final shape at home. Pictured is the printed wood ink before it has been dried.