Soda Fired Reduction Cooled Porcelain 2020
Recently, I had the opportunity to do an experimental firing, a soda firing that included reduction cooling. I’ve completed a few test firings using a reduction cooling method in the past, and with promising results, but this was the first chance to go “all in”. I am very excited to see where this path may take me. The work was all made with porcelain and glazed with the same copper based glaze I have used for many years. The single difference in this firing is what I did during the cooling phase.
Once the kiln reached its peak temperature of 1300 degrees C, it was quickly cooled with all ports and the damper opened until about 1100C. At this temperature all of the openings in the kiln were closed and small pieces of wood were then introduced through a spy hole. The atmosphere in the kiln became cloudy and smoke seeped out of the small gaps in the bricks. I stoked small pieces of wood about every two to three minutes as the kiln slowly cooled. After about two hours the kiln had reached 900C. I stopped stoking, fully sealed all of the ports and the cooling continued. After two days, I opened the kiln to reveal its treasures.