Looking at closeups of the Rover, I cannot help but think: are those screws, nuts and bolts? And if so, why? Why carry the weight or decreased stiffness of or by the notches, slits, threads etc. that makes screws be screwable. To a place where no-one ever will unscrew them?
Because you'd need higher weight in wall thicknesses if using weaker 3D printed aluminum instead of aluminum sheet, bar stock etc. Which actually has a coherent grain.
I'd be amazed if we could build a single-use unibody rover but even so I suppose those bolts and nuts give some needed flexibility when landing and moving.
