We regularly have Good one side board that is required for doors and drawer fronts (with holes needed in the degraded side) and for other panels with holes or rebates needed in the good side, as well as panels with no holes.  Rather than having to setup 2 different materials for the same material so as to designate Good side up and Good side down for machining, does MV have some function available to define whether materials are good both sides or not, and when it is G1S, enable the good side to be identified in the model, so we avoid as much as much as possible mistakes drilling in the wrong side.