Rapid prototyping - fast doesn't necessarily mean simple

Proto Labs has created the Protomold Torus to demonstrate interesting features that can be designed into your parts for a variety of different purposes. The Torus comes with an information guide that describes those features and the mould-making techniques used to produce them. The Torus is made up of three separate sections, each with features illustrating some of the more complex geometries that are supported by the Protomold (ultra-fast) injection moulding service.