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Copper Oxide (Black)

Copper Oxide (Black)

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Regular price $23.95 CAD
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CuO.  2% added to most glazes produces a clear green. In alkaline glazes the colour shifts to turquoise blue.  At 5% or more, metallic surfaces develop. Fired in a reduction atmosphere, red colours are achieved with ½% or less. To substitute for copper carbonate, use 71% of the recipe requirement.

Note: Glazes become increasingly susceptible to food acid attack as copper oxide levels increase.  

For more information on copper oxide, see the Digitalfire.com Reference Library of ceramic materials.

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