Saturday, May 21, 2011
It is nice to do different glaze colors. But difficult at times to get what you want. I was blessed years ago by being gifted by a Minnesota potter named Mae, who gave me some starter glazes. This was when I was just starting out and needed a palette of glazes. Since then I attended a Ron Roy workshop with my friend Pam (up at Canadore College in North Bay Ont) on glaze manipulation. Then I converted most of my glazes to use frits instead of GB. I fire at cone 6 in oxidation.
So, now I want a shiny brown, with depth and that breaks nice over the rim. Not runny, but can be thick. I took Ron Roy's Raw Sienna and increased the RIO (red iron oxide) and made up a 200 gram batch. Using Continental Clay's mid fire white stoneware I did some samples. I did a bowl with just the new brown, one with navy and the new brown, one with butterscotch and the new brown. The new brown looked beautiful on the outside, but a bit "orange peeled"on the inside. Not quite a matt, but close on just the inside. Not bad looking, but for dinnerware, I prefer the durability of a shinier surface.
Then I glazed a Paoli clay co. MTM stoneware (brown) with navy and the new brown. Good results on this but again orange peel inside. I wondered if the inside atmosphere of the bowl resulted in the duller affect with a mid fire white (not as much ocher in the clay body)as the brown stoneware, but no.