I’m envious of your setup Trevor – I think it’s many a modeller’s dream to knock a hole in the wall and release the navvies! Completely understand your reasoning for fully enclosing the skyrail section to main the vermin-proofing of the top floor, but have you considered using clear perspex instead of timber/mdf? Might be nice to see the trains running through that part, even if the main action is taking place in the train room itself. Could also be a good teaser for visitors on the way in. Just a thought, understand if that’s starting to approach the realms of over-engineering!
Morpeth In O-Scale 
I’m envious of your setup Trevor – I think it’s many a modeller’s dream to knock a hole in the wall and release the navvies! Completely understand your reasoning for fully enclosing the skyrail section to main the vermin-proofing of the top floor, but have you considered using clear perspex instead of timber/mdf? Might be nice to see the trains running through that part, even if the main action is taking place in the train room itself. Could also be a good teaser for visitors on the way in. Just a thought, understand if that’s starting to approach the realms of over-engineering!