Tarnished Rail

[Butch]

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.

[Brian]

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.

[Walkingthedog]

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