40 hopper cars on the wall! 40 hopper cars!

[modelsof1900]

I hope you will still enjoy building them by doing #10 .

Yes, I know these problems. I'm building five identic cars only - and I'm working in the fifth year! And I hope to see an end in horizon now.
I'm sure that I will never build more than two models, in a rare case also three - it is too pedestrian, really.

In case of building 23 models I would build a master sample without all the fine detailing parts. Than I would search a plastic model builder who can cast copies from this master piece and after there must be added the superdetailing parts only. Alone this step will need many time however it will be a more shorter way reaching all the 23 model.
My small remark.