Many 3D scanners are built to scan whole objects, but that doesn't necessarily cut it if you're trying to scan a specific part. Ever try to map your own hand? Yeah, that doesn't work very well. However, recent graduate Pieter Smakman has a better way. His custom-built Curatio scanner creates a detailed 3D model of your hand simply by putting your hand inside a ring -- you don't have to wave a device around. It uses relatively off-the-shelf parts for the capture process, too, including Raspberry Pi mini-PCs, 32 (!) cameras and laser pointers.