Some cool 3D Printer images:
makerbot hand 3d printer
Image by IntelFreePress
Hand printing in a MakerBot 3-D printer.
3-D Samaritans Print New Mechanical Hand for Toddler
3-D printing enthusiasts volunteer to create prosthetic hands that cost instead of 0,000.
Maker bot and 3D printer
Image by juan tan kwon