How to Use Clay Molds – Support, Slump and Relief Press Molds
We carry three different types of molds for shaping clay, and each works best with its own technique. This guide walks through how to use support molds, slump molds and relief press molds.
1. Support molds (e.g. bottle and vase molds)
A slab of clay is shaped around a support mold, which acts as a structural support while you work. Example: Clay Support Mold - Vase with sharp edges.
Important: Cover the mold first so the clay doesn't stick to it – for example with newspaper, plastic, fabric, or the mold release sleeves we carry. Shape the clay around the mold, but don't press it on too tightly. As soon as the shaping is done, take the piece off the mold right away – it isn't left to dry on the mold, but dries on its own after it's removed.
2. Slump molds (e.g. egg-carton and tray molds)
Cut a piece of clay to the right size and press it onto the mold. Press down enough that the clay takes on the mold's shape.
- With these molds you don't need paper or plastic in between – depending on how firm the clay is, it can be left to dry directly in the mold.
- In some cases it's a good idea to place some weight on top of the mold so the edges don't lift while drying.
3. Relief press molds (with foam)
Cut a piece of clay to the right shape and place it on a thick piece of foam. Put a thin sheet of plastic wrap between the clay and the mold, then press the mold onto the clay.
- Press down a little so the clay takes on the shape well.
- Lift the mold away – the clay piece is ready to dry.