Multiple plastics

Hi all, I was wondering if it is legal to use multiple types of plastic (specifically Lexan and Delrin), as long as the total area adds up to 12″ x 24″.

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Not sure what you mean by legal, but if it helps: If you can shred it and melt it, then you can use it.

in Brazil, people join multiple plastic jogether, melt and add sawdust, … This is “Plastic wood”