how would you go about making a mirror image of a 3D form like a fender or cowling? If it helps, these will be hollow parts or will be composed of such pieces.
my only idea so far is to make a set of cross-sections, form a crude jig out of those, use that to vacu-form the part and then reverse the cross-sections to make the opposite jig and make the flipped version of the parts.
any suggestions?