The Koreasat 5A and Koreasat 7 telecommunications satellites are currently under construction by Thales Alenia Space and will be launched into orbit with metal 3D printed components. The 3D printed telemetry and command antenna supports measure about 17.7 x 15.7 x 8.2 inches (45 x 40 x 21 cm) and are regarded as the largest ever fabricated using additive manufacturing technology in all of Europe. The supports were printed on the Concept Laser Xline 1000R 3D printer, a powder bed additive manufacturing process that uses high powered lasers to melt metal powder into three-dimensional shapes. You can read more over on 3DPrint.com: http://3dprint.com/100320/korean-satellites-3dp-parts/