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HAD LIPSON: You know, many people wonder whether 3D printing has reached its peak, whether this is a hype cycle that's now at its maximum. But really, I think we've only seen the tip of the iceberg of this technology. HAD LIPSON: What we've done here is basically print a consumer electronic device, a very simple electronic device, but what we're trying to do is to move 3D printing away from just printing passive parts, plastic or metal, to printing integrated systems, active systems that can do something. They have batteries, wires, electronics in them. So what we've done here is use two different printers to do two different parts of print job. But it's possible to foresee that, in the not so distant future, you'll have one printer capable of working with multiple materials, multiple processes, all in one print job. So one of the challenges in printing electronic systems is really a material science challenge. You can load up the printer with lots of materials, but the challenge is, are these materials mutually compatible? Can you have conductors be printed at the same time as nonconductors? Can you have batteries printed? Can you have electronic transistors be printed, all at the same time? So it's a little bit like a color printer, that can print with a couple of primary materials that combine together to give you lots of shades of color. With multi-material 3D printing, we'll be able to combine lots of different materials to create new things, new functionalities, new material qualities we haven't seen before. VOICE FROM DEVICE: New workers are mastering the 3D printing that has the potential to revolutionize the way we make almost everything. New workers are mastering the 3D printing that has the potential [AUDIO FADES OUT]

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Cornell researchers in Hod Lipson's Creative Machines Lab have 3-D printed a working loudspeaker, seamlessly integrating the plastic, conductive and magnetic parts, and ready for use almost as soon as it comes out of the printer.

It's an achievement that 3-D printing evangelists feel will soon be the norm; rather than assembling consumer products from parts and components, complete functioning products could be fabricated at once, on demand.