Former Google product developer and Bhold founder Susan Taing came up with the idea of using 3D printing to apply the beta testing model to the development of the physical products that she sells. Bhold Labs, her open-access beta testing initiative, gathers product testers from all over the world and distributes 3D printable files for many of Bhold’s products, allowing them to print them out and test how they work in real world conditions. Products like iPhone holders, travel hooks and cord management devices are all evaluated for flaws by their volunteer testers, who provide their feedback with an easy to define and organize reviewing system. Bhold products can often go through almost a hundred different iterations before Taing settles on the final product design to be mass produced and sent to market. You can read more about Bhold and Bhold Labs over on 3DPrint.com: http://3dprint.com/116127/prototype-testing-bhold-labs/