Coroplasst is for prototyping.
www.nudo.com/resources/p22_product_data.pdf
Polymetal is laminated aluminum skins on a thermoplastic core. It has a Class A fire rating for whatever that's worth.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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