Inside of tunnels

Ericstrains has a great video series on tunnels and lining the inside:

I don't know what the video shows, but I've had great success spray-painting flat black a piece of slightly crumpled aluminum foil and hot-gluing it in.  Easy and quick.

TrainsRMe posted:

I don't know what the video shows, but I've had great success spray-painting flat black a piece of slightly crumpled aluminum foil and hot-gluing it in.  Easy and quick.

Ditto

Soxfan posted:

I am curious as to what ideas people have developed to deal with covering the inside of tunnels.... thanks, Paul

I have used these wooden-appearing walls to line the interior of tunnels, as far in as the eye can see, starting at the portals, as you can see here. Once the interior walls curve out of sight, I leave the tunnels wide- open on the inside so I can always reach in from their backsides when a derailment or finicky locomotive requires a reach-in by me.

I used a luan sheet,cut the tunnel walls and roof from the sheet using a jigsaw , painted the three rectangular cut panels on one side latex paint concrete gray then assembled the concrete gray tunnel using wood glue and wood strip on the exterior to stiffener the two longitudinal 90 degree corners. The ceiling of the tunnel allows smoking engines to create a smoke draft from the portals.  

Depends on what I want and how close to the front of the layout and how far into the tunnel you can see. If I want to show some detail I'll use one of the pre-made wall products out there. If it's in the back or you cannot see too far into the tunnel I have spray painted corrugated cardboard either dark gray or black and hot glued it to upright supports in the general curve or line of the track.

Mike

We have a lot of old abandon train tunnels in Nevada. the oldest ones are just chunked out of the rocks and definitely not made for show. The idea of TRAINSRME of spraying crinkled up tin foil probably is the best look.

Now Disney put a lot of stuff in his train tunnels around Disneyland. Maybe now that mounting a camera on the front of locos is popular, you could put features inside.

For my tunnel, I flipped the tunnel section on it's back and sprayed minimal expanding window insulation foam.  Then spray painted it black.  This gave the tunnel a great look of rock formations with lots of variation in size and shape.