As part of this year’s London Design Festival The Building Centre, in partnership with Zero Zero and Arup, constructed the world’s first two storey open source, digitally-fabricated house. The project design, named “WikiHouse 4.0”, can be downloaded, adapted, ‘printed’ using a CNC cutting machine and then assembled in a few days with no construction skills and for under £50k. Leading Architectural Ironmongery manufacturer SIMONSWERK were approached to collaborate on the building and supplied the entire door and window hinge systems from their innovative, invisible TECTUS fully concealed hinge system.The tried and tested, completely hidden TECTUS hinge range provides unsurpassed high quality solutions for interior space doors and functional heavy duty doors with high load values up to 300 kg, offset models for invisible frames or versions with intumescent kits. The range also includes the TECTUS Energy model, with integrated power transmission for the secure use of electronic applications. This outstanding, acclaimed hinge system has 3D adjusting technology, an opening angle of 180 degrees and a maintenance free slide bearing mechanism. All models have a uniform appearance with a closed hinge body and are available in different materials as well as in attractive surface finishes.