as a revolutionary Technologies evolve, they shrink—once they take up an entire room, they eventually fit on your kitchen counter. 3-D printers have taken it to that level. And at about $300 for high-tech machines, they’re now so affordable that almost anyone can go. If you still see them as incredibly stupid, it’s time to reconsider.
To design and print everything from toys to phone cases, tools, coat hooks, even passable jewelry, all you need is a machine, downloadable plans, and some plastic filament. Here, some ways to use 3-D-printing to make you a quieter person, at least in the eyes of other nerds.