LION used no Plywood, OSB board only on a late addition helix 9that board was scrap recoverd from a shipping crate.
LION used CELOTEX for the deck of him, and on 16" centers at that. (Think Light-weight Homosote). It is more stable than Homosote, Lighter, and easier to cut. It does not sag as the heavier Homosote would. Altogether LION recommends Celotex as the PURRFECT product.
Ah But. There is allways a but is there not. While the Celotex Company is alive and well, this signature product is no longer made, a victim it would appear of the advent of fire codes. It would be the equivalent of using paper mache for walls and ceilings. Inspectors will not allow the stuff in structures, but it works perfectly on the railroad.
My Grandparents had a similar, even softer product for the walls and ceilings of their cottage in Conneticut, but that was of course before fire codes were applied to the world.
2'x4' accustic ceiling pannels look like a good option, but you must be very careful with them as they will break easily. LION has had good luck with foam of all kinds, him even uses foam for the track supports. Him also used 2" thick fiberglass roofing insulation, the kind with tar paper on both sides. Very light, very stable, easy to cut, but you will have to take a bath after touching the stuff: You do not want to have fiberglass particles in your fur.
The bottom level of track was a late addition, at the moment I am not sure what I made it out of.
To the left of that is a ramop made of Celotex. The third level is mostly Celotex, but there is a snip of Homosote to the left.
The fourth level is Celotex, and the top level is 3/4" foam built on a frame of tis own than then placed above the rest. You can see that it is only supported at the ends, but it does have supports built into the mini-table.
The pink foam on the bottom level is going to be the Cortland Street Platform. To the left of that will be the Nevins Street Station, and above that the Lenox Avenue station hidden behind the blue foam.
Supported by the Blue foam is the 8th street Level It will have a fiberglass paltform, you can see it, sort of warped on that level, it will be nice and smooth once I glue it in place.
LION has made many of the platforms of him from this material. 4" wide x 4' long him slices it into two halves about 3/4" thick and then used the table saw to cut out the platform lip. Nice work the LION does, even if only him says so.
LION only has to please LION. If Wildebeest comes into room LION will eat him up.
ROAR
