Aardvark Obsidian, 25lbs.

Very dark, smooth black finish. (Formerly Cassius Basaltic) Behaves like a porcelain. Needs lots of oxygen during bisque firing. Please refer to this link for Aardvark's suggested bisque firing schedule that was created with Obsidian in mind. https://www.aardvarkclay.com/pdf/technical/Bisquefiring.pdf

Details:
**note: Do NOT fire this clay body above cone 5 (2167F/1186C)

Fired Appearance: Oxidation: dark black - Reduction: N/A
Avg. Shrinkage 2±%: 14.5%
Avg. Water Absorption 1±%: .5%

Weight: 1 bag = 25lbs