As part designs become increasingly complex, there is a corresponding growing desire to emulate that complexity in the prototyping stage. A novel technology developed by Objet Geometries, Rehovot, Israel, makes that possible to an unprecedented degree. The company’s PolyJet Matrix technology, first employed in its Connex500 system, can simultaneously jet two different materials with different mechanical properties, permitting the prototyping of co-injected or overmolded parts. In addition, the system can blend those two materials in different proportions on the fly, enabling the fabrication of a multiple-material model in a single build.