Aardvark Obsidian Clay , Cone 5, Sold via 50# box (2 bags)
(Formerly Cassius Basaltic) Fired Shrinkage is 14.5% and Water Absorption is .5% when fired to cone 5. Very black, ebony like finish. Contains no talc. Needs lots of oxygen during bisque firing. Please refer to this link for our bisque firing schedule that was created with Obsidian in mind.
https://www.aardvarkclay.com/pdf/technical/Bisquefiring.pdf
***Each 50 pound box is shipped via USPS Large Flat Rate Box for $23.00 per box- this is by far the cheapest shipping option for a 50+ pound package and can ship anywhere in the united states including Hawaii and Alaska.
For orders over 500 pounds contact Clay Gurus for pallet freight options.
(Formerly Cassius Basaltic) Fired Shrinkage is 14.5% and Water Absorption is .5% when fired to cone 5. Very black, ebony like finish. Contains no talc. Needs lots of oxygen during bisque firing. Please refer to this link for our bisque firing schedule that was created with Obsidian in mind.
https://www.aardvarkclay.com/pdf/technical/Bisquefiring.pdf
***Each 50 pound box is shipped via USPS Large Flat Rate Box for $23.00 per box- this is by far the cheapest shipping option for a 50+ pound package and can ship anywhere in the united states including Hawaii and Alaska.
For orders over 500 pounds contact Clay Gurus for pallet freight options.
(Formerly Cassius Basaltic) Fired Shrinkage is 14.5% and Water Absorption is .5% when fired to cone 5. Very black, ebony like finish. Contains no talc. Needs lots of oxygen during bisque firing. Please refer to this link for our bisque firing schedule that was created with Obsidian in mind.
https://www.aardvarkclay.com/pdf/technical/Bisquefiring.pdf
***Each 50 pound box is shipped via USPS Large Flat Rate Box for $23.00 per box- this is by far the cheapest shipping option for a 50+ pound package and can ship anywhere in the united states including Hawaii and Alaska.
For orders over 500 pounds contact Clay Gurus for pallet freight options.