Plenty of all-in-one printers can scan, fax and print, but an all-in-one 3D printer is a horse of a different color. XYZ Printings new da Vinci 1.0 and 2.1 AiO 3D printers let you scan and print 3D objects from one machine. We checked out the new devices here at Computex 2014 and were intrigued by the da Vincis promise.