ADVANCE FOR USE SATURDAY, JAN. 28, 2016 AND THEREAFTER - In this Dec. 7, 2016 photo, a 3D printer works on printing the first half of the ukulele body designed by students at Whiteside Area Career Center in Sterling Ill. The technique, in which plastic or another substance is laid down in layers to create three-dimensional objects or parts for assembly, is becoming more widely available as the technology improves and the cost of the printers comes down. (Michael Krabbenhoeft/Sauk Valley Media via AP)
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