A prototype 3D-printed robotic hand that can be made faster and more cheaply than current alternatives is this year's UK winner of the James Dyson Award. The Bristol-raised creator of the Open Bionics project says he can 3D-scan an amputee and build them a custom-fitted socket and hand in less than two days. It typically takes weeks or months to obtain existing products.The 25-year-old inventor intends to charge customers £2,000 for the device, including the cost of a fitting. Although prosthetic arms fitted with hooks typically can be bought for similar prices, ones with controllable fingers are usually sold for between £20,000 and £60,000.