The endurance limit of the materials is determined by failure criteria that are reduced using specific safety coefficients. In the case of the Orbital, the resistance of the steel/aluminum/nickel alloy is pushed to its upper limit. The solidity of the materials, coupled with the lightness of the aluminum, is precisely suitable for stabilizing the structure of the alloy. A rigorous procedure must be followed, and it is essential that the pieces are high quality. Both the materials used and the visual demands of the structure make TIG welding necessary. To complete the structure, the essential element is the patina, which alone requires a particular level of expertise. The patina and specific gilt are produced according to the desired finish, whether this is ancient or contemporary.