I'm still working on 40' boxcars, but the plan is to convert all my MTL boxcars to new roofs, some with see through running boards, and some with running boards removed. I used .010" modified acrylic for the running boards, and .003" thick peel & Stick acrylic for the bowtie pattern roof. The actual roof piece is .015" thick clear modified acrylic. It gives a much lower profile appearance: I was searching for a way to show how see through the running board slots are, and this shot at high noon sunlight ( it was 90 degrees here today) kind of shows the see through effect. Here's a CNR Plug Door that I did today, unweathered because I am sending it along with another car to Tom Mann, so he can work some magic weathering on it.
This car, and the one below it, I had a hard time matching the roof paint with the car, but the weathering should hide that small problem: Here you can see the color difference is more noticable. This time I decided on no running boards:
