Copper Red and Copper Yellow cone 6

So in the tile on the bottom, we added the colorants that would make a copper red in a high alkaline / low alumina base in reduction, but in this case we fired it in oxidation and got a copper yellow!

V.C. Matte cone 6
40.0 Nepheline Syenite
8.0 Whiting
14.0 Silica
10.0 Kaolin
10.0 Gerstley Borate
8.0 Lithium Carbonate
________
10% Titanium Dioxide

Add: 0.5 % copper carbonate and 1.5 tin oxide

The tile on the top uses the same colorants (0.5 % copper carbonate and 1.5 tin oxide) but they are added to Selsor Base cone 6 and fired in reduction:

Selsor Base cone 6

56.0 Nepheline Syenite

10.0 Whiting

20.1 Silica

12.5 Gerstley Borate

Add: 0.5 % copper carbonate and 1.5 tin oxide

To give a copper red.


John Britt

www.johnbrittpottery.com/wks/htm

Here is a