Mould making marks the beginning of ceramic manufacturing, crucial for producing consistent ceramic items in large quantities. This process involves creating a negative impression of the desired item, serving as a template for making multiple copies. Mould making is a highly valued and experienced craft. A skilled mould maker can produce up to 100 moulds a day.

To begin, a machine pours water and plaster into a large jug. After mixing, the plaster is poured into a silicone or metal form called a Cottle. "Soft soap" is added before pouring the plaster to facilitate separation later on. Once filled, the plaster is stirred to release air bubbles. After some drying time, the mould is removed using a hammer and a little brute force, leaving behind the negative impression of the desired ceramic product. Finally, the outer edges are smoothed using a small metal tool on a potter's wheel.

The origins of mould making in Stoke-on-Trent's ceramic industry can be traced back to its emergence as a major centre for pottery production in the 18th and 19th centuries. As demand for pottery grew, local artisans and entrepreneurs recognised the need for more efficient production methods. Mould making quickly became a transformative technique, enabling precise replication of intricate designs and shapes. These methods have persisted into the 20th and 21st centuries, helping manufacturers streamline production and expand their offerings. This crucial role has greatly enhanced Stoke-on-Trent's reputation as a global pottery leader.

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