Copper Matte

Coppermatte: The Technique of Matte Rainbows

Coppermatte is an extraordinary technique that results in a matte rainbow effect on ceramics. The outcome depends on several variables, including temperature, oxygen flow, the mixture for the copper matte glaze, and even the thickness of the ceramic walls and size of the pieces. This technique is highly dynamic, as the process requires precise control and attention to detail.

It is one of the most simultaneous techniques, involving alcohol-based reduction, which sets it apart from other experimental methods. The reduction process in copper matte is more fiery and vigorous. The mixture for copper matte typically consists of colorants and a small amount of frit or glaze.

Pieces are carefully removed from the Raku kiln at just below 1000 degrees using special tongs and then undergo reduction with a small amount of sawdust. During this reduction process, alcohol is sprayed onto the ceramics to enhance the effects. Unlike other techniques, there is no cooling in water or polishing with wax—leaving the surface matte and rough.

This technique is reserved for the true connoisseurs, those who appreciate the fiery, raw beauty of ceramics.