found this stuff: http://www.artplace.com/It says "Paverpol [fabric hardener] can be used to make all sorts of materials rock-hard, such as textiles, paper,..."Also, I think any clear-drying decoupage glue (like Mod Podge) would also harden paper.
*Reminder: Paverpol_ Gotta check this out on my next trip to Artfriendhttp://www.paverpolaustralia.com/index.html
An excellent fabric hardener that dries fast and is very easy to use on any natural material such as silk, soft leather, self-hardening clay, polystyrene foam, wood, plaster, ceramic and more. It adheres to almost anything except plastic.
Unique Qualities:
Dries rock hard without additives.
Causes item to be weatherproof and suitable for outdoors.
Washes off with warm water.
Mixed product does not harden; if kept in sealed container it can be re-used.
