Sunday, May 31, 2009

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
Here is a


  1. I love this new text book and I don't even need a Kindle--thanks!!!!

  2. Gotta get one of those. They look really great. Sell more pots.


Comments are moderated to prevent spam. May take a while to see them posted.