VIDEO: MIT Media Lab Prints Out Sweet-Sounding Flute With 3D Printer. “The flute was created on an Objet Connex500 rapid prototyper, a 3-D printer that can print in multiple materials at the same time. The flute was constructed from a few different materials – a rigid material for the body, a softer one for the mouthpiece, another for sealing the air in at the proper places – during a print run of about 15 hours, during which time the materials were added on one thin layer at a time.”