Raw clay or greenware is bisque fired up to red heat, 850 to 1000 degree celcius. This is then called bisque ware. Clay is bisque fired to facilitate handling for the glazing process and to prevent blow-ups on glazed pieces. Bisque ware is painted with underglaze, bisque fired again and then glazed. Bisque ware can be glazed with a coloured glaze and then glaze fired. Bisque ware can be painted with any kind of paint that sticks to an absorbing surface, e.g. acrylic and/or PVA. It can be used for: decoupage, mosaic, moulds for glass slumping and as moulds for clay work.