This is a stunning thread. It has obviously degenerated into fine scale, and even further degenerated into 2-rail. I went through all 13 pages yesterday and today - it kinda deserves to be in a more widely scanned forum, or maybe two!
Later, I will again present some of my UP doorstops. I am just a few pipes and steps (and maybe an injector or cold water pump here and there) away from owning a UP-3 class 4-12-2, and as soon as I am home when the sun is at the right angle, I shall get a portrait for here, and for MTJ.
I am seriously impressed with what you guys have done, both with your models and with this thread.
On the rivet press - I think I have the best rivet press this side of Korea. Push me a bit and I will again share details.