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The Historyscoper's Science and Technology Watch Blog Apr. 2, 2015

Friday, May 2, 2014

Write before your eyes! Amazing 3D printing PEN ‘draws’ plastic objects in thin air

http://www.pakalertpress.com/2014/05/02/write-before-your-eyes-amazing-3d-printing-pen-draws-plastic-objects-in-thin-air/
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