Bisque fix is a white paste that is excellent for mending material or fill up broken cavities. It can be colored to match the bisque using metal oxides or ceramic stains. After applying with a spatula, fire to the temperature of the clay and glaze that you are using, up to Cone 10. Bisque fix is an air set concrete type product and can be kept longer if when you are done using it, put a thin layer of water in the jar then recap and store. When you re-use it, pour off the water, remix and apply as normal.