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Is there anything that can harden thin layers of cardboard, inside AND out, permanently? Answered

This is for a sculpture project where I am building sculptures out of cardboard. 

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bwrussell (author)2017-05-19

Any sort of glue will do this to some extent. Mod podge, epoxy, wheatpaste, regular glue, etc.

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Jack A Lopez (author)bwrussell2017-05-20

Is regular glue another name for, "white glue", or PVA?

https://en.wikipedia.org/wiki/Polyvinyl_acetate

I tried asking Google(r) images about, "regular glue", and I think most of the search results look like some kind of PVA, but I still don't know for sure if people really use that phrase, "regular glue", in real life English.

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steveastrouk (author)2017-05-20
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Yonatan24 (author)2017-05-20

Wires through the corrugations (isn't that how they're called?)

Polyester resin, as rickharris suggested, but it'll probably be pretty expensive...

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Downunder35m (author)2017-05-19

Acrylic paint will do just fine too.
Just make sure it is not water based as it takes forever to dry.
Also gives a nice surface finnish if a stiff brush is used to get the last kinks out of the cardboard while applyng the paint.

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rickharris (author)2017-05-19

Polyester resin - it will soak into the card and then harden.

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