Porcelain pottery results from heating refined materials such as clay at high temperatures. When mixed with water, these materials form a plastic body that can be worked to a required shape before firing in a kiln. Heated at temperatures between about 1,200 and 1,400 degrees Celsius, porcelain is known for its toughness, strength and translucence.
Choose the Right Clay - Purchase porcelain clay. It is usually white and identified by its ability to be heated in a kiln, or pottery oven, at temperatures of 2,340 to 2,460 degrees Farenheit. Ask to handle the clay before purchase. Unfired clay is quite flexible and you can test it for strength, durability and shrinkage rate.
Consider primary clay. It is extremely pure, although not very pliable, so it is best for advanced practitioners. Inquire about the different types of porcelain clay. Ball clay is desirable and commonly used for porcelain, though it has to be combined with other types of clay since it is overly flexible and easy to break when pure.