Somebody on a 3d printing forum that I belong to has posted pictures of arm/hand prosthetics that he has printed for kids who didn't have access to more expensi

Somebody on a 3d printing forum that I belong to has posted pictures of arm/hand prosthetics that he has printed for kids who didn't have access to more expensive commercially available prosthetics. Its amazing the impact that 3d printing technology and few dollars in filament can have on a person's life.