Architectural glass light in industrial factories. Annealed glass is glass without internal stresses caused by heat treatment, i.e., rapid cooling, or by toughening or heat strengthening. Glass becomes annealed if it is heated above a transition point then allowed to cool slowly, without being quenched. Float glass is annealed during the process of manufacture. However, most toughened glass is made from float glass that has been specially heat-treated. Annealed glass breaks into large, jagged shards that can cause serious injury and is considered a hazard in architectural applications. Building codes in many parts of the world restrict the use of annealed glass
Ancient Egyptian pottery of decorative techniques and motifs, many of which are characteristic of specific periods. There are three points in the manufacturing process in which decoration could be added: before, during, or after the firing process. Since the predynastic period, potters added decorative elements in the molding stage, creating unusual shapes or imitating other materials, like basketwork, metal, wood or stone. The majority of the 'fancy features' were created during the process of shaping the vessel and smoothing its surfaces, long before it was fired. The elements were either shaped from a piece of clay by hand or impressed into the clay