Ball clay
Ball clay is a type of highly plastic, pale-colored clay, recognized for its excellent modeling ability and high strength once fired. This clay is a mixture of finely ground minerals, mainly kaolin, and often contains additives such as bentonite to improve its plasticity. Ball clay is one of the most common ingredients in the manufacture of pottery wheel clays due to its malleability and ease of handling, making it ideal for the creation of utilitarian pieces such as cups, plates and vases that require precise shapes and fine details.
Due to its high plasticity, ball clay allows for detailed handling and effective adhesion between the different parts of a ceramic piece. However, its softness also makes it more susceptible to deformation and cracking during drying and firing, so it is often mixed with other types of clay or degreasers such as grog to improve its stability and reduce shrinkage. This clay is fired at high temperatures, which gives it great strength and durability, making it suitable for both utilitarian and decorative ceramics.Interesting Fact
Ball clay has been instrumental in the development of some of the world's most prestigious ceramic manufactures. A notable example is the famous English brand Wedgwood, which relied heavily on ball clay from Nottinghamshire to create its pieces.Helpful Tip
To maximize the properties of ball clay, it is advisable to mix it with other types of clay or degreasers such as grog, especially when working with large or complex pieces that require greater stability during drying and firing. Also, be sure to knead the clay evenly to distribute the additives and eliminate air bubbles, which improves its plasticity and reduces the risk of cracking.
