First I raid my recyclables for paper. I stay away from anything glossy or extra thick, because I’m not going to spend a lot of effort breaking it down.I run the paper through a security shredder, boil some water and combine equal parts of the two and let them set overnight.
After it’s soaked I strain it and grab small clumps of the paper and squeeze it as dry as I can by hand into little balls about an inch in diameter. Then I lay the balls out in a single layer to dry out completely.Now when I need a bit of paper clay all I have to do is grab a few balls and reconstitute them with water.
Once the balls break up completely, I strain the excess water, add some glue and I’m good to go.
Since I’m not using any mold inhibiters if I don’t use it all, I refrigerate the rest.