Sometimes I have to trick myself into doing things I don't like. I don't like recycling clay. Its amazingly messy, time-consuming and smelly. (Yes, smelly.) So to make it more exciting my recycled clay is becoming colored clay. So far I have blue, black and yellow. With grey and pink on the way...
Step 1: Dry out trimmings.
Step 2: Slake down trimmings with water and about 1/2 cup of vinegar. (Vinegar is to assist in breakdown of trimmings and aid in plasticity. Potters have also been known to use beer and *gross warning* pee.)
Step 3: Add colorant. I have been using a combination of mason stains and oxides.
Step 4: Mix well and run through sieve to remove lumps and homogenize.
Step 5: Transfer mixture to old pillowcase, and set out to drain.
Step 6: After a few days, clay will be firm enough to wedge-up and use!