<https://forums.geocaching.com/GC/index.php?/topic/381875-were-to-buy-real-waterproof-paper-not-rite-in-the-rain/#comment-6033572>
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"Here in Australia, Office Works sells these A7 notepads made of \"stone paper\", which consists of crushed rock held together in a polymer binding.\n \n\n\n\t \n \n\n\n\t \n\n\n\tThey're made by Nuco and distributed by J.Burrows so you might be able to source them in other countries and/or obtain larger sizes. The paper itself is great, it can be written on with pencil, ballpoint and marker pens, the only problem I've had is that water-based marker pens will bleed through when the paper gets wet. I tried an experiment a few years back, writing on a page with pencil, ballpoint and a spirit-based marker pen then leaving it in a bucket of water for a couple of weeks. Nothing bad happened and, after drying it, it was as good as new.\n \n\n\n\t \n \n\n\n\tThe notepad covers are just plain cardboard and don't do well when they get wet, but I've recently tried spraying them with a waterproof coating and that seems to be working (so far). The other option I've tried successfully is to just use the note paper and make my own laminated covers.\n \n"
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