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How does coiling clay create a pottery vessel?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Stages in the slip casting of a thin-walled whiteware container. Clay powder is mixed in water together with a dispersing agent, which keeps the clay particles suspended evenly throughout the clay-water slurry, or slip. The slip is poured into a plaster mold, where water is drawn out by capillary action and a cast is formed by the deposition of clay particles on the inner surfaces of the mold. The remaining slip is drained, and the cast is allowed to dry partially before the drain hole is plugged and the mold separated. The unfinished ware is given a final drying in an oven before it is fired into a finished product.
traditional ceramics Stages in the slip casting of a thin-walled whiteware container. Clay powder is mixed in water together with a dispersing agent, which keeps the clay particles suspended evenly throughout the clay-water slurry, or slip. The slip is poured into a plaster mold, where water is drawn out by capillary action and a cast is formed by the deposition of clay particles on the inner surfaces of the mold. The remaining slip is drained, and the cast is allowed to dry partially before the drain hole is plugged and the mold separated. The unfinished ware is given a final drying in an oven before it is fired into a finished product.

Coiling is a foundational hand-building technique in pottery used to construct vessels without the use of a wheel. The process involves the following steps:

  • Preparation: Long, rope-like rolls of clay are prepared by the potter.
  • Construction: These rolls are stacked in a circular pattern, layer upon layer, to gradually build up the walls of the vessel until the desired height and approximate shape are achieved.1
  • Finishing: Once the structure is formed, the walls are refined through scraping and smoothing to create a uniform surface.1

While this method is an early development in ceramic technology, it remains a significant technique for creating vessels, often requiring the potter to move around the piece or rotate it manually during construction. This differs from wheel throwing, which utilizes a rotating disc to achieve greater symmetry and efficiency through mechanical or manual rotation.1