To open the first semester at the ETH, we asked the students to design and build a structure from discarded materials, reclaimed and re-used to provide shelter and a place to meet - the primary purpose of architecture. Wooden palettes with nothing more to carry, hoarding with no construction work to enclose and old timber beams cut too short to span may appear today as rubbish, valueless and passed utility and even passed beauty. Using simple hand made assemblies, the modest cast offs will be mined for new constructional and structural potential. Gravity, hammer and nails and handsaws will form the grammar of the new structure. The project was structured in three parts, the first 24 hours was an intense design laboratory to survey the assembled material and propose a structure that will transform and transcend the original materials into a new place.The second part and the most demanding was the building. The third part was the celebration: to host events and talks and any other architectural experience you can conceive for the neglected but peaceful corner of ETH that the structure will inhabit.