The Slipcasting Process

Slipcasting is a traditional ceramic technique that allows potters to create refined and consistent forms by using liquid clay, known as slip. This process is especially valuable for producing larger batches of ceramics with precision, while still retaining the handmade quality of the craft.

1. Preparing the slip

The process begins with mixing clay, water, and sometimes additives into a smooth liquid consistency called slip. The slip must be carefully prepared to ensure the right balance between fluidity and density, as this determines the strength and final finish of the piece.

2. Using plaster molds

Slip is poured into plaster molds, which have been designed and created beforehand in the shape of the desired piece. Plaster is naturally absorbent: it draws moisture out of the slip, causing a thin layer of clay to solidify along the inner walls of the mold.

3. Building wall thickness

The slip is left in the mold for a set period of time. The longer it sits, the thicker the clay layer becomes. Once the desired wall thickness is achieved, the remaining liquid slip is carefully poured out, leaving behind a hollow clay form.

4. Drying and removing the piece

As the clay continues to dry inside the mold, it shrinks slightly, which makes it easier to remove. The mold is opened, and the fragile piece now called greenware is carefully taken out. At this stage, the object is still delicate and needs careful handling.

5. Refining the details

Before firing, the piece is cleaned, smoothed, and any seams or small imperfections are corrected by hand. This ensures a flawless surface that highlights the craftsmanship once the piece is glazed and fired.

6. Firing and glazing

The greenware is fired in a kiln to become durable ceramic. Depending on the design, the piece may then be glazed and fired again, adding color, texture, and a protective finish.

Why choose slipcasting?

Slipcasting is ideal for producing uniform pieces that are consistent in size, weight, and design perfect for restaurants, hotels, and larger orders. It allows potters to replicate shapes that would be difficult to achieve on the wheel, while still maintaining the artistic integrity of handcrafted ceramics. Compared to wheel thrown pieces, slipcast ceramics often have a more precise, sleek, and lightweight quality, making them especially attractive for professional hospitality use.