This white paste is an excellent mending material for bisque that can be used to bond pieces together or fill up broken cavities.
After applying with a spatula, fire to the temperature of the clay and glaze that you are using -- up to Cone 10 (2381°F, 1305°C).
Important Storage Note:
Bisque fix is and air set concrete type product. There is a way to keep it longer. After you have used it and are ready to put it away, put a thin layer of water in the jar then recap and store. When you go to use it again pour off the water, remix and apply as normal.