halkossman wrote:
... The question should have been "is there any thing I can do to prevent this warping?"
In my opinion, the simple answer is ... no. Consider that glass may change dimensions ever so slightly given a dramatic change in temperature, it will never, under ordinary circumstances, warp. A relatively flat piece of wood is bound to change shape in one way or the other depending on the grain orientation, etc., etc.
Given all that, the way I would approach such a project would be some sort of segmented glue-up where you could, to some degree, control shrinkage and expansion while limiting warpage. I'm not quite clear on what you mean by 'decorative plates' but assuming their enameled or otherwise opaque, I'd try using some sort of silicone adhesive, a rather heavy bond joint, to allow the wood to move independent of the glass. I've tried a number of projects incorporating brass and copper with wood with little success thus far due to the same issue: wood moves, other stuff don't. As much anyway.
I for one would really like to see a photo of your project(s), failed or otherwise. They sound very attractive.
[Edit: The subject line in the forum list shows a paper clip (attachment) but I don't see one. Is there a photo floating around in cyberspace somewhere I'm missing?]