A type of material jetting additive manufacturing that jets a photopolymer from multiple inkjet print heads to form a layer of material. A UV lamp is used to cure each layer after it is deposited. PolyJet systems can deposit one material per head, allowing for as many materials to be deposited on a given layer as there are print heads in the machine. The small droplet size also allows materials to be combined to form new materials with unique stiffness, transparency, or color.

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