I've wanted to do a ghost train for a while now and this year it's happening.
The majority of the build is 2x2's and 1/4 subfloor mahogany ply. These materials are keeping down both the weight and cost of the build. The main boiler is just 2 4' diameter circles strung together with 2x2's and wrapped in the 1/4" ply.
My boiler door is actually the hatch from an old hospital laundry chute. I got it a few years ago before the building was scheduled for demolition.
The boiler provides a nice dry environment for my fog machines.
Anyhoo, thought you Halloween folks would enjoy seeing the progress. 


My boiler door is actually the hatch from an old hospital laundry chute. I got it a few years ago before the building was scheduled for demolition.


The boiler provides a nice dry environment for my fog machines.