We employ the possibilities of parametric modelling software andcustomized mass production machinery to develop a design for adaptablemultifunctional temporary medium size buildings made from recyclable lightweight materials and built a prototype from cardboard. We developed agrasshopper script that controls the geometry of a self-supporting arc made from a folded plane. The project is conducted as an experimental design-and-build university course that familiarizes students with parametric thinking and designing and with carrying out a project from initial concepts through tobuilding a 1:1 prototype. This project is part of an ongoing series of investigative design & build courses integrating current design possibilities and construction methods.