A few bags of magnets finally turned up from the US! Revisiting this topic before I get gluing and the one question I have to ask is did you make that awesome 3D background yourself?!
I did, thanks.
It's all made out of 1/8" fiberboard. Time consuming, but pretty simple, really.
I made a post about it a hundred years ago here: My Tiny Death Star
One of these days I'm going to go back and make a trench... honest...




