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A casting process for ceramics where liquid clay body (slip) is poured into plaster molds and allowed to form a layer (the cast) on the mold's surface. Types include solid and hollow casting. Uses are for producing multiples of a pottery item with fine details.

A type of ceramic mold made of bisque-fired clay that is used for pressing clay into shape. It can be used multiple times. Types include hump and slump molds. Used for hand-building techniques and creating identical ceramic pieces.

A gypsum cement that is stronger and more durable than plaster of Paris and is used to make high-quality molds. Types include White and FGR-95. Uses are similar to plaster molds but are better for producing detailed and long-lasting molds in ceramics.

A small, often detailed mold for making decorative additions to pottery. They are often made of plaster or bisque-fired clay. Types include one-piece and multi-piece molds. Uses include creating repetitive motifs or embellishments.

A support shell that holds a more flexible mold in shape. It is often made of materials like plaster or fiberglass. Types can be segmented or one-piece shells. This is crucial for maintaining the shape and integrity of flexible rubber or silicone molds.

A mold over which a slab of clay is draped to form a vessel or plate. The clay takes the shape of the underside of the mold. Types include plaster and bisque. Uses include forming plates, bowls, and more organic shapes.

The adjustment made to molds to account for the shrinkage of clay during drying and firing. It ensures the final ceramic piece is of the intended size. Calculations may involve the clay body's shrinkage rate, which is typically 5-12%.

A substance used to prevent clay from sticking to a mold, making the removal of the cast piece easier. Types include soap, oils, and commercial sprays. Uses include aiding the release of clay from plaster and bisque molds.

A wall or frame used to contain plaster when pouring a mold. Types include wood, metal, and plastic cottles. Primarily used to form the outer perimeter of plaster molds in hand building or sculpting.

The original mold from which working molds are made. It is usually more robust and less detailed. Types include split master molds and block molds. Uses include the production of multiple working molds for slip casting.

Small openings in a mold that allow air and excess slip to escape during the casting process. They help in reducing air bubbles and preventing the formation of voids in the cast piece. Types can be manual or strategically placed design elements. They are crucial for successful slip casting.

A chemical additive used in slip to reduce its viscosity and the amount of water needed to keep it fluid. Types include sodium silicate and Darvan. Uses include making slip for casting that flows easily into mold details without shrinking too much.

The process of creating notches or indentations in a mold to help align the separate parts correctly. It ensures multi-part molds fit together without shifting. Keying is essential for maintaining the shape and design during the casting process.

A building material used for making molds in ceramics, which is a form of calcium sulfate that hardens when mixed with water. Types include pottery plaster, white art plaster, and molding plaster. Uses include creating complex shapes and detailed designs in slip casting.