Dahlhart Lane: How to make Paper Clay Paper Clay: 2 Cups toilet paper 1 Cup regular joint compound (the premixed kind. Jonni recommends not using Dap brand 3/4 Cups paper mache paste or Elmers glue (much cheaper to use your own paste). 3/4 Cups flour Soak TP roll in water, remove cardboard roll, break up paper into chunks. Add all ingredients and mix with beaters on medium-high for 2-3 minutes and viola! You are ready to sculpt your heart out! Recipe yields 3 Cups of paper clay.