I have been working with Bone China for more than 20 years, and have mainly used it as a vehicle for decoration with soluble salts which I have been working with for most of that time.
Living in South Africa, finding consistent materials is often a problem. When I began my exploration of Bone China, the first recipe I tested was the standard recipe that is often a kick-off point in testing it, i.e., 50% Bone Ash, 25% Potash Feldspar and 25% China clay. I made it by substituting Calcium Triphosphate for the bone ash, and Serena (a local Kaolin) – which is the closest local equivalent to