Recipe: Porcelain Clay Slip

Cone 6 Porcelain Clay Slip Flint 10.0 Ball clay 20.0 Kaolin 20.0 Nepheline Syenite 48.0 Talc 2.0 Water 36.0% of dry amt Soda Ash 0.05-.1% of dry amt Sodium Silicate 0.05-.2% of dry amt or Water 36% of dry amt Darvan No. 7 0.5% of dry amt This recipe is much less plastic than ceramic slip but has a faster casting rate. It will deflocculate to 1.8 specific gravity also and will fire to produce vitrified ware that is extremely strong and durable. It has a long firing range and can produce ware of excellent translucency with a clean ball clay.