Scott Baker did an exterior modelling pass in NURBS and SubDs after my initial 2D attack. Afterwards, to help NZ with fabrication, I took the coffin element of Scott's model (the basic shape of which was partially derived from Andre's earlier model), refined it a bit, and then texture-mapped it with high-res textures into which I cleanly painted the desired part lines and details in "trompe-l'oeuil" technique. There's no way I could have modelled all this! UV'd geo, textures, and ortho renders were then handed off to fabrication.