C60 cwt Signals CZMk IV

[Phil Waterman]

Hi Gordon

I used two layers of 1/8 mahogany luan plywood which was actually fairly cheap, when I was rebuilding my S56 Radio Box. Used two layers of the thin 1/8 instead of 1/4 inch because the 1/8 would bend to the curves of the roof inside and out while I could not get the 1/4 plywood to bend that sharp without breaking. Little glue between the layers and it has been in the box on the truck since 1992.

Did a little searching on the internet seems to relatively common, even in marine grade. Marine grade I found for 4'x4' or 2'x8' sheets 1/8 thick was $28. Found some none marine grade 4'x8'x1/8" for around $15 per sheet.

When I went looking the local lumber yard had it in stock in 4x8 sheets it is used in cabinet work for the bottom of drawers.

I went the same way and used rigid foam re-insulate.

Cheers Phil