Porcelain of porcelain, but of porcelain enamel on a metal base, usually of cast iron. Porcelain enamel is a marketing term used in the US, and is not porcelain but vitreous enamel. Porcelain Porcelain () is a ceramic material made by heating materials, generally including kaolin, in a kiln to temperatures between . The toughness, strength, and translucence of porcelain, relative to other types of pottery, arises mainly from vitrification and the formation of the mineral mullite within the body at these high temperatures. Though definitions vary, porcelain can be divided into three main categories: hard-paste, soft-paste and bone china. The
Volkstedt porcelain Volkstedt porcelain Volkstedt porcelain manufactury sited in Rudolstadt, Thuringia, Germany, was the earliest porcelain manufactory in Thuringia. It was in business as Aelteste Volkstedter Porzellanmanufaktur, the "Oldest Volkstedt Porcelain Manufactory", which was integrated into the VEB Vereinigte Zierporzellanwerke Lichte, which in turn formed part of the Kombinat Feinkeramik Kahla. The factory had its origins in an official request made 8 September 1760 by the porcelain maker Georg Heinrich Macheleid (1723-1801). Macheleid had long worked in the glass manufactory at Glücksthal and had gained the arcana of porcelain-making by his own researches, apparently independent of Ehrenfried Walther von Tschirnhaus and Johann