Replacing metal by plastics is not a new topic at all, and we all have heard about the most interesting advantages of plastics over metals: the increased design freedom of plastics allows complex shapes to be made with the same cost levels as for simple shapes, which is far from being the case with metal (except if you deal with aluminum injection molding of course…). Part weights are always significantly lighter than with metal, even if to keep the same level of part stiffness you always need to increase the plastic part thicknesses, and generously add ribs. Integrating functions is always easier with plastics than with metals, where costly secondary steps are needed for each added function with the latter one. Another advantage with plastics (at least for certain applications) is the...