Mid-fire utility stoneware for making functional pieces. Refined, highly plastic, and semi-vitrified. Contains more Redstone than any other clay. Screened through a 100M sieve and designed for making pieces with a smooth, flawless surface. Very similar in composition to M-350, it shares its delicate, smooth appearance but is more plastic. Its darker color tends to limit its use to specialized glaze effects. Contains 5 different natural clays, individually balanced. Characteristics: Cone: 4-6
Wet Color: Dark Brown
Fired Color
Cone 4 Oxidation: Deep Red
Cone 6: Dark Red
Texture: Smooth
Average Shrinkage Rate
Cone 4 Oxidation: 4.5-5.5%
Cone 6: 5.5-6.5%
Average Absorption Rate
Cone 4 Oxidation: 4.0-5.5%
Cone 6: 1.5-2.5%
COE x 10-6: N/A
* Protect from freezing.