Almost a year ago, commercial launch provider Vector Space Systems, which was founded by the original SpaceX team and based in Tucson, successfully launched its P20 sub-orbital satellite prototype, featuring an entirely 3D printed injector. The company used another 3D printed injector this week, when it launched a test flight of its Vector-R launch vehicle engineering model; the small rocket was built for the specific purpose of carrying small payloads up into space. The model was made up of the 3D printed injector and the Vector-R first-stage engine. The rocket, which was launched from the Friends of Amateur Rocketry (FAR) site in Mojave, California, was scheduled to reach an altitude of 4,500 feet. Read more at 3DPrint.com: http://3dprint.com/173412/vector-r-3d-printed-injector/