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Crawling
The glaze pulls together and forms separate droplets on the surface of the clay body. Crawling occurs when the glaze contracts too much during the heating cycle and doesn't get sufficient a chance to smooth over. Another cause may be due to bad adhesion of the glaze, e.g. when glaze was applied to a very dusty pot.
Remedies:
· Substitute some of the clay content of the glaze with kaolin
· Substitute glaze fluxes such as zinc oxide and dolomite with their calcined form
· Clean off any dust with a sponge prior to glazing
Guru Spotlight |
Jolyn Wells-Moran |