A 3D vase called The Hidden, designed by Dan Yeffetlamp is seen at the Belgian company Materialise, the biggest 3D printer in Europe, in Leuven January 24, 2013. 3D printing has already changed the game for manufacturing specialized products such as medical devices but the real revolution will come when designers start to rethink the shapes of objects. 3D printing removes the limitations of the manufacturing process from the equation, which means whatever can be designed on a computer can be turned into an object, specialists say. Picture taken on January 24, 2013. To match Feature 3D-PRINTING/ REUTERS/Yves Herman (BELGIUM - Tags: SCIENCE TECHNOLOGY)