Model Railway Forum

I'm putting together my new layout from old, previously used, rail stock. This is quite tarnished so I'm cleaning it up as I go. But I have two tunnels I'll be building in a couple of areas. My concern therefore is how in the future I might clean up the track within if it's been left for a while and tarnished again.

What's to do? Thanks.

Use a Track Cleaning wagon, often a tanker style wagon and the tank is filled with 99.9% Isopropyl Alcohol (IPA).
Use a long but thinish length of batten timber with a pad on the end that can be dampened with IPA and push/pulled over the rails inside the tunnel.
Make the scenery of the tunnel removable or have an access hole to the inside of the tunnel.

The inside of tunnels always need to be accessible. If something is going to derail it will be in a tunnel.