Video Caption: Presenting Europe’s first 3D printer designed for use in weightlessness, printing aerospace-quality plastics. ESA’s Manufacturing of Experimental Layer Technology (MELT) project printer has to be able to operate from any orientation – up, down or sideways – in order to serve in microgravity conditions aboard the International Space Station. Based on the ‘fuse filament fabrication’ process, it has been designed to fit within a standard ISS payload rack, and to meet the Station’s rigorous safety standards.
The MELT printer can print a wide variety of thermoplastics from ABS (Acrylonitrile butadiene styrene), as used in Lego, up to high-melting point engineering thermoplastics such PEEK (Polyether ether ketone), which is robust enough to substitute for metal materials in some cases.
The printer was produced for ESA by a consortium led by Sonaca Space GmbH together with BeeVeryCreative, Active Space Technologies SA and OHB-System AG. The MELT project was supported through ESA’s Technology Development Element programme, which identifies promising technologies for space, then demonstrates their workability.