I started a project of a fire train. I needed a big water wagon, so I designed the 120 t, 8 axl tank wagon. It is a bit big and printing can get tricky.
I also printed it with 50% + infill to get some weight. The wheels are standard 10.4 mm metal wheels.
n.b. Some of the other models shown on the picture are not made by me, so I cannot publish them.
The author hasn't provided the model origin yet.