aahh... I suppose it's kind of comparable to what you're actually doing as I'm assuming everything is to a specific scale... ever thought of getting these things 3d printed? I bet you could actually make fully working (not mechanical) but fully moveable models... probably make a fortune out of it too!
it would definitely be something to look into cause if you're gonna be designing machine parts something like this would be ab awesome way to show what you can do! or at least if not this something more relevant to whatever job your applying to...