This is one of those mad tv ideas what has come true and will be incredibly valuable in the future of space exploration as well as down here, in the video did thay say it was an hour and a half to make the wrench
3D printers are nothing new, but this new design is much more efficient and less wasteful than anything I've seen before. No word on cost, though. Without economies of scale I'll wager it will be a while until they're cheap enough to start putting them in at print shops. Once they make it into the consumer market, though, it's going to change everything.