CLT bending is based on the lattice hinge process that was developed on a large scale for this project : a series of longitudinal cuts sawn by a CNC machine. In addition to reducing the overall stiffness of the panel, these thin strips also give a slight transparency and good acoustic quality to the structure. The curvature of the panels is maintained by a post-tensioning system developed specifically for the project. Custom-made cast iron pieces are inserted into the slots and tensioned by a steel rod at each end. All these parts can be disassembled to put the panels back flat and facilitate transportation.