The Additive Layer Manufacturing (ALM) is one of the key technology have been demonstrated to provide a significant added value for space missions. . When repairs are needed during a mission on board the International Space Station ISS and the necessary tools are not available, Alexander Gerst may experience difficulties performing his work. Therefore 3D printing technology directly on board of the ISS will allow producing on-demand tools, spares and components according to the needs. We. Create. Space.