I’ve been playing with this as an idea with some thin lead foil, and failed:
First the handling destroyed the printing very quickly. This probably not helped by the printer being a laser type. I varnished the transfers before cutting out on a subsequent attempt. The transfer did not adhere well to the foil and came away once trying to put the bends in around the ends of the sheet supported and wagon. The transfer also to broke up on some folds and began disintegrating. I’m considering some self adhesive foil - the kind used for fly tying - on the next attempt in the hope the transfer will stay together better. I’ve found some 0.15-0.2mm thick but nothing thinner. That’s way above scale thickness for me but maybe it will work. I don’t believe it would be possible to fit the sheet made with foil to the wagon and then add the transfer onto it afterwards so the extra stress of bending two materials fixed together is unavoidable with the method.