Limited Stock of Kona F-4 Feldspar which has not been available for a while. It is a sodium feldspar. This material is prized as a porcelain ingredient because of its low iron content. It is used in casting and throwing porcelains of all types.
At cone 6 for example, it is possible to make a vitreous body usingAnother similar material is Nepheline Syenite. 50-60%. However to get enough plasticity in such bodies, it is necessary to use ball clay or bentonite
which can darken the color. If high plasticity is not essential, Macaloid and plastic kaolins can be used. Another similar material is Nepheline Syenite.
