Jean-François Rey, the Marseille-based eyewear designer brand, is launching a series of seven frames with a 3D-printed Nylon face, following the success of its NAUTILUS launch a year ago. The 3D-printed shapes are produced using the Selective Laser Sintering technology, an additive manufacturing technique that uses a laser to sinter powdered material and bind it together to create a solid structure based on a 3D model.