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Can liquid starch make cardboard really stiff and hard? Answered

Especially thin cardboard? 

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cerberustugowar (author)2017-05-24

i've used wheat paste to glue together cardboard and make a 3D shape for a cat to scratch on. The 50 layers of cardboard made it kind of stiff and hard, but from what I remember of your other question, this wouldn't really apply to your problem

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rickharris (author)2017-05-23

really stiff NO . + being water based it will make the cardboard soggy.until dry.

You already have the best answers, polyester resin would be the way to go.

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steveastrouk (author)2017-05-23

Not really hard, like resin hard.

And its susceptible to mould,being great mould food

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