Meshes are 3d models composed of nodes (vertices), edges and face. Unfolding a mesh is the process of choosing seams and laying the face out flat, into a ‘net’, much in the way a cardboard box is can be laid flat. The process of laying a mesh out flat, which I will call Unfolding, is facilitated by software, which can handle complex meshes with precision. This method can let one create real physical models from 3d meshes: the net can be cut-out, folded up and the seams re-joined. This can be done in a variety of materials and methods: plastic, paper, fabric and sheet metal can be cut out on a CNC machine (like a lazer cutter) and then riveted, glued, sewn or welded.