Sold in 25lb bag.
Wh8 is a strange clay, it has a high expansion, and if we get the absorption too low, We will see some shivering. With the absorption around 3% we see no crazing or shivering.
There is a lot of variation in the absorption because the fluxes are quite active at cone 6, so a little hotter or cooler makes a big difference.
Our method of making the tiles, weighing the tiles and boiling is unique to us, and gives us relative values that allow us to compare batch to batch.
In
the real world the clay works fine, fits most glazes, and is easy to use. Coyote’s archies base glazes with high
lithium content were shivering, in the past, but I think they had to cut the
lithium down as it is $$$$$.
WARNING: This product can expose you to chemicals including Silica, crystalline (airborne particles of respirable size), which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.