Pottery batts can be used in a variety of ways: on the wheel to alter the wheel head diameter, as a removable work board on the wheel to prevent distortion when taking pots off the wheel and as a work board for hand building.

Pottery batts Sizes range from 152 mm (6 inches) to 710 mm (28 inches) in diameter.
They are made in Australia from "Weathertex" which is a higher quality and more waterproof material than masonite.