Any of various computer-controlled devices designed to fabricate three-dimensional objects, as by extruding layers of plastic from a robotically controlled syringe.
A machine that creates a plastic or metal part one layer on top of another (the additive fabrication method). Used mostly for quickly creating prototypes and molds, 3D printers are also used to build final parts. Available for myriad industrial uses as well as for the hobbyist, a variety of different technologies are used to form the layers. For details, see 3D printing. See personal 3D printer, 3D printing materials and rapid prototyping.