Many studies have been conducted on the geometric definition and simulation of curved-folded elements using a wide range of computational techniques. Robotic fabrication technologies have already been applied to single-panel folding processes. However, few large-scale applications have been realized. Structural joining techniques remain a challenging subject, since the geometry and assembly trajectories between multiple curved-folded panels are extremely complex. This study employs computational design and digital fabrication technology in order to structurally connect single and double-layer curved-folded aluminium panels. It shows experimentation on joining techniques, engraving and cut precision using milling and waterjet cutting. We demonstrate two largescale prototypes which were realized at the EPF Lausanne and TU Munich, and analyse their structural capabilities using a custom meshing algorithm and FE-Modelling. With the proposed digitally fabricated joining types, curved-folded structural shells can be realized using extremely thin aluminium plates without the need for additional mechanical fasteners. Double-layer panels can improve stability within one panel, but generate geometric challenges when connecting multiple panels. The efficiency of joining typology, such as traditional mechanical fasteners, folded joints and integral mechanical attachments are compared. We conclude by showing possible future developments and discuss applications in the building industry for structural metal facades and wall systems.