How to Recycle and Reuse Clay in the Classroom

Our video Recycling Clay in the Classroom demonstrates 4 different techniques for recycling clay that can be used in both a classroom studio and a personal studio.

Technique 1: Pinch & Mist Method
This is the easiest way to recycle clay in the classroom when it is still malleable but starting to crack a bit when in use. 

1. Break up unused clay pieces into small, golf-ball-sized pieces.
2. Place them in a plastic bag and mist liberally with water.
3. Close the bag and slam it on the table or floor to compact it into one piece.
4. Ensure the bag is closed tightly and leave it overnight. 
5. Check the clay's plasticity the next day. If the clay feels workable in your hands, it's good to use; however, if it's still hard to pinch, repeat steps 1-4. 
   
   

Technique 2: Cut & Wrap Method
Use this method when the clay is somewhat moist and workable but still cracks.

1. Cut the clay into large chunks. 
2. Wrap clay pieces in a damp towel, then put them in a plastic bag. 
3. Remember to remove the towel once the clay is soft enough, or it will get moldy. 

Technique 3: Slice & Fill Method
Use this method when the clay is very hard, but you can still get a wire through it.

1. Slice the clay into ~2" pieces.
2. Poke deep holes in the clay using the end of a fettling knife.
3. Place the clay in a plastic bag, fill the holes with water, then stack the next clay piece on top, and repeat. 
4. Wrap in plastic, and in a couple of days, the clay will be ready to use. 

Technique 4: Dry & Soak Method
Use this method when the clay is too hard to cut through, and it's almost fully or completely dried out. Wear a mask while doing this method in a well-ventilated area to avoid inhaling dust. 

1. Use a hammer or other tool to break the clay into golf-ball-size pieces.
2. Put the chunks in a bucket, then add water. 
3. It will only take a few minutes to break down into a slip. 
4. Place the slip on an unpainted piece of plywood, drywall, or plaster to let it soak up excess moisture. Any of these surfaces will dry out the clay, leaving it ready to use.