Can I use Clay that has gone hard?
If your clay is not completely dry but too stiff to work with, there are several methods you can use to bring it back to a workable consistency.
Rehydrating Small Pieces
Wrap the clay in a soaking wet towel, then seal it inside plastic to keep the moisture in. Leave it for a couple of days, then wedge thoroughly. This method works best for smaller amounts of clay, so it may help to cut a large block into smaller sections first.
Rehydrating a Full Clay Block
Use a screwdriver, pencil, or similar tool to poke holes into the block. Do not pierce all the way through; leave a few centimetres of solid clay at the base. Fill the holes with water, wrap the block in airtight plastic, and let it sit for a couple of days until the water has absorbed. Once softened, wedge the clay to even out moisture and restore plasticity.
Rehydrating Completely Dry Clay: Step-by-Step
Step 1: Gather the dry clay
Collect all dry scraps or broken pieces. This method works best with natural clay bodies that do not contain waxes or additives.
Step 2: Break into smaller pieces
The smaller the fragments, the faster and more evenly they will absorb water.
Step 3: Place in a container
Use a plastic or glass container. Avoid metal, as it can rust or react with the clay.
Step 4: Add water
Pour enough water over the clay to cover it. Start with a small amount and increase only as needed.
Step 5: Let the clay soak
Leave the clay to absorb water for several hours or overnight. The clay will gradually slake down and soften.
Step 6: Check consistency
If the clay is still firm or lumpy, add a little more water and continue soaking until fully softened.
Step 7: Wedge thoroughly
Once pliable, remove the clay from the container and wedge well to distribute moisture evenly throughout.
Step 8: Adjust moisture if needed
If the clay feels too wet, let it air dry or mix in dry clay. If too dry, sprinkle with a small amount of water and knead again.
Important
- Wedging is essential after rehydrating clay to remove uneven wet and dry spots.
- Extremely dry clay may require repeating the process.
- Some clays do not rehydrate perfectly. Rehydrated clay may feel different from fresh clay, so test it before using it for important pieces.
