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A Brighter Future for Manufacturing, 3-D Printed 1 Layer at a Time

Will 3-D printing transform conventional manufacturing?
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Oak Ridge National Laboratory's robotic prosthesis looks like something out of medieval times—a hand clad in chain mail more appropriate for wielding a broadsword than a mug of coffee. Both the underlying skeleton and thin, meshlike skin are made of titanium to make the hand durable and dexterous while also keeping it lightweight. The powerful miniature hydraulics that move the fingers rely on a network of ducts integrated into the prosthesis's structure—no drilled holes, hoses or couplings required.

Yet what makes this robot hand special is not what it can make or do but rather how it was made and what it represents. Conceived on a computer and assembled from a few dozen printed parts by so-called additive manufacturing, more popularly known as 3-D printing, Oak Ridge's invention offers a glimpse into the future of manufacturing—a future where previously impossible designs can be printed to order in a matter of hours.

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