LOW FIRE SLIP Low-Fire White Slip C/06-04 Pours smoothly & quickly, drains evenly, produces greenware of good strength. Absorption at C/05: 17% Available in 2-gallon boxes. Terracotta Slip C/06-04 A classic terracotta color at C/04. Excellent casting slip. Can be used in all types of molds. Very good for functional ware. Absorption at C/04: 5% Available in 2-gallon boxes.