Dunt

Dunting is a fault that can occur during the firing of ceramic articles. It is the "cracking that occurs in fired ceramic bodies as a result of a thermally induced stress" and is caused by a "ware cooled too quickly after it has been fired".

Although usually occurring during cooling dunts can also be caused by excessively fast heating rates. Heating dunts can be recognised by rounded edges to the cracks as the glaze matured after they occurred, whereas cooling dunts have sharp edges.