speaking the truth

Nice! Capping the end joints is much prettier than what I would've done, which would've been to cram a 2x2 in there. I might've thought about sticking some insulation in the corner, or maybe a tube of pipe insulation? Might improve the thermal efficiency of the wagon a bit and make it a bit less wind leaky (I'm really good at ideas and making things more complicated than they need to be). Dunno if you already have them in place at this point yet.