A duck whose foot had to be amputated because of a birth defect is wearing a prosthesis fabricated with 3D printing technology. "His muscles will have to adjust, but I'm amazed at how well he's doing right off the bat," said Buttercup's owner, Mike Garey. Garey created a design that was produced by NovaCopy, a 3D printer in Nashville, Tenn., that donated its time and expertise to the project.

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