PBS Off Book on 3D Printing
So how about those newfangled three-dee printing machines? I guess they're a thing. But in all seriousness, PBS Off Book's overview of the current state of 3D printers and their potential is pretty on target. One worry I have is that 3D printers become synonymous with CNC machines, a category that goes beyond the scope of MakerBots and RepRap machines. 3D printers have a great future, but it's a whole host of different CNC machines (and those working in concert) that will change the world.