>> hold that up so we can see that. >> hold something big up. the point is, this computer gets a design message from something. you've designed that. and it just builds that in that little housing. how big of a thing can you build? >> you can build something up to about this big, 5 by 5 by 5 inches. >> okay. and what kind of things would this be useful for? i us samples, but in terms of mass production, the fact that you can buy a unit and produce things perhaps in your own home, what kind of things would it be useful to print as it were? >> well, no one will have to buy a bottle opener again. you stick a penny in there and you're opening bottles. all sorts of stuff from knobs, anything you want. >> in the history of manufacturing in this country, we remember times when women were given sewing to do at their