Pine plywood?

[Salamander Rising]

Pine ply is fine, kiln dried pine is fine. Plywood is heat treated to death so it is completely fine to use. I might suggest looking at Baltic birch as it is stronger and can be used in smaller thickness and at least in my area it is about the same price as fir.

i would suggest not using a wood bottom if you are thinking of UTHs. I would suggest using PVC (not expanded PVC aka PVCx just the plain with ho air bubbles in it) it is warp resistant and strong and also easier to heat through than PVCx and way easier than wood.

Home Depot sells a really nice furniture grade Birch plywood that is super light and easy to work with.

My Boa condos and Alice-catraz are made of it.

Very pretty, too.

http://www.homedepot.com/Lumber-Comp...&storeId=10051

And no formaldehyde, which most plywoods are loaded with.

I also use their tempered hardboard [basically really compressed "wood dust" that has no phenols or formaldehyde either] and seal it with non-toxic water based acrylic or polyurethane to make it water resistant.

So far, so good, especially with the Dumeril's huge, disgusting messes.

It's thin but dense and sturdy and spreads the heat very evenly and nicely, IMO.

Here's Alice in his post-escape SuperMax house.



[and yeah, he's always checking out that lock very thoroughly]

Where can I find large sheets of PVC for the bottoms?

[4' x 2', specifically]