In Pictures: 3D printing - How does it really work?

Here are the nine most common 3D printer technologies

Technology No. 9: PolyJet 3D printing Inventors: Objet; Rami Bonen, Gershon Miller and Hanan Gotaiit; merged with Stratasys

Year: 1998

Materials: Seven different materials; printer with clear transparent, high temperature and rigid opaque polypropylene-like materials -- four rigid opaque materials in a variety of colors plus transparent material (VeroClear), high temperature material (RGD525), and polypropylene-like material (DurusWhite)

Process: Similar to inkjet document printing, but instead of ink on paper, layers of liquid photopolymer spill onto a build tray, which are then cured with ultraviolet light. Fine layers build up until object is created.

Price Range: $15,000 - $750,000

Systems Sold by: Stratasys

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