demiss -- demystifies medical processes, it's like a black box we can't open. >> first let's meet a man using technology called 3-d printing, designing downloads on your computer, with just the press of a button can make anything from an eyeglass case to a prosthetic hand. >> when you say, i need something, which one am i going to buy? when you make something you think, how can i make it perfect. >> he's the ceo and co-founder of a brooklyn-based company who has taken this once expensive technology and put it in the hands of consumers. >> when he showed up, we showed america that anybody can use a 3-d printer. it turned out that's really