Put down your tools and throw away those molds — 3D printing means customized complex geometries can be produced en masse at a fraction of the cost.
From watch cases and spikes on running shoes, to rocket engine components and implants for the human body, 3D printers can be used to make virtually anything out of virtually anything. Materials are printed layer-by-layer into such intricate devices that designers and manufacturers are being forced to rethink their entire approach to construction.
