Gypsum and plaster are key materials in the manufacture of molds and ceramic modeling tools. Their high porosity allows them to absorb water from the slip, making it easier for the clay to solidify on the mold walls. This property is essential for the creation of hollow pieces such as cups, decorative figures, and jars.
Thanks to their water absorption, plaster molds allow the clay to harden in a controlled manner, which facilitates the creation of complex and detailed shapes. In addition, the porosity of these materials makes it possible to mass-produce identical pieces, a key advantage in industrial ceramics.
Interesting Fact
The porosity of gypsum and plaster makes them essential tools for mass production, as they allow the production of multiple identical parts.
Helpful Tip
It is important to make sure the molds are completely dry before pouring the slip, as moisture in the mold can affect the consistency of the piece, causing warping or uneven drying. Also, clean your work area well, as any plaster residue on the clay can cause explosions in the kiln due to its rapid expansion to heat.
