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This term was originally used to describe a thermal cycle carried out at a maximum temperature of 800°C.
The word third-firing derives from the fact that ceramicCeramic is a material which is obtained from clay pastes and other substances available in nature. In its natural state, ceramics is very ductile, while it becomes very hard after firing. Many products are made of ceramics – from cladding, covering products, bricks, sanitary wares, mechanical and aeronautical products and solutions used in the building... Read more » pieces had already undergone a first firing cycle of the body and a second cycle to fire the layer of glaze. Originally, only decorations in pottery, crockery items and ceramic tilesCeramic tiles are relatively thin slabs of ceramic materials in various sizes and thicknesses. As with all ceramic materials – for example (plates, cups, etc.), sanitary ware (wash basins, bidets, lavatories, etc.), building materials (bricks, roof tiles, hollow tiles, etc.) – ceramic tiles are made from a mixture of clay, sands and other natural substances.... Read more » were earmarked for third-firing.