3D Printers - The Best of Magic Boxes

3D printers have been called "magic boxes" that could revolutionize manufacturing. We could be creating almost anything we want from anywhere in the world, with a click and digital data file download! They are paving the way for an age of one-off production that could replace the current mass production standard. And yet their technology is surprisingly simple. Could they even become a standard home device? We open the lid on these magic 3D boxes, to explore their possibilities and problems.