Polyjet is a proprietary technology of Objet 3D Printers. It works in a similar technique as an ink jet printer but uses resins instead of ink. The resin is laid down on a print bed layer by layer and is hardened using a UV light. Machines with multiple print heads can create parts with different colour and properties. Some machines even combine a combination of materials to make hybrid, ‘digital’ materials. Print materials range from hard plastic like material right through to soft rubber like materials. The build resolution is very fine so you get great surface finish right out of the machine.