High temperature adhesive. Becomes a buff grey colour when fired between 1000-1260°C, becoming progressively lighter in colour as it rises higher through the firing range. Can be used to repair bisque breakages in addition to minor kiln brickwork repairs.
Dampen both surfaces with water if necessary, then apply Thermofix to both surfaces before bonding together and re-firing. Gluing a large surface area is preferable in order to achieve a strong bond.