Display stand for 9mm scale N track model trains

Display for those trains you always planned to create a model rail road for, but never had the space, time, money e.t.c.

Put them on display :)

Designed for 3 layers, but should not be hard to extend to more.

The project started with two questions

1. Can I create (as in: am I capable of creating) a vase-mode model.
2. Can I put my trains on display but reduce the amount of dust they will collect.

The result, a 23cm half-open tunnel-like structure, in which N-gauge tracks fit perf