What is the best adhesive for sticking two pieces of cardboard

What is the best adhesive for layering cardboard to make 'boards'? I'm designing a cat tree/palace/whatever because most of the expensive ones online are just thick cardboard! I have access to tons

What is the best adhesive for sticking two pieces of cardboard together? - Quora

How to stick a piece of 8.5' X 11' paper to cardboard without the wrinkling that often happens with glue - Quora

Which glue can I use for cardboard projects? I don't want to use hot glue. - Quora

What is the best adhesive to stick bicycle tube together? - Quora

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What glue will bond slate together? - Quora

What is the best glue for cardboard? - Quora

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Can you use Krylon Crystal Clear over Wood Glue like Titebond 2 Premium to make cardboard or foam forms waterproof? - Quora

Is there an adhesive that can hold a heavy ten pound box to the wall without damaging the wall when being removed? Can it be used around all the sides of the

What is it called when individual pieces of wood are glued together? - Quora

How can paper be glued to cardboard without creating wrinkles? - Quora

What is the best adhesive for sticking two pieces of cardboard together? - Quora