do the inside with SPA Varnish, it resists UV so your finnish will last longer. I don't think you have to worry about a fire.. its made of wood
if it isn't hot enough to scorch it then it won't hurt varnish or polly when its dry as all the carriers are gone.
Steve
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*everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
Some strive to be perfect.... I just strive.