PSH 540i Black 22lb Bag

540i is a brown-black cone 6 clay with non-toxic iron oxide, suitable for tableware but prone to defects and bloating at high temperatures.

• The description claims that 540i is more reactive and outgases more than other clays.
• The description claims that 540i can be fired to cone 5 for less depth of color.
• The description claims that 540i is not recommended for microwave use.