As you may recall, I made a Challenger a couple of years back, with a centipede tender. I worked from photos, but got off on the tender and once I finally got plans I discovered my observing it on the track was right and it was too big, plus pretty heavy. So I started over, using the plans and made some wood bulkheads and covered them with 1/32nd plywood. Decided to use an used printing plate for the metal sides. I embossed it with rivet patterns, looking at my photographs.
I used thinner craft foil for the front and back, so I could get more detail in, the printing plate was sorta thick, but added strength. I used 3M spray adhesive to attach it to the plywood. I used 3M tube tack and trim adhesive for the front and back. Nasty fumes, so use outside! I am reusing the USA Big Boy front trucks as I did on the old one, and the centipede side frames that I made from scratch.
I added the tool boxes and covered them with metal duct tape that I had embossed.
This is coming out a lot smoother and lighter than the old one.