I'm not sure if this kiln fires any more efficiently with the hole in the center. I didn't notice any difference in firing times for finished product. But one thing for sure---it is a lot easier looking into the kiln with the hole off-center. My favorite addition to the new lid is the two heavy-duty handles, which makes removal much easier.
Took my first clay classes at Bemidji State University in 1989. In 2002, after a long break, I started more pottery classes at Viterbo University in La Crosse, WI.
I do not have one area of interest, but that isn't to say I am unfocused. I enjoy making everything from coffee mugs to trompe l' oeil. I work with highfire stoneware, and low fire earthenware. I'm just clay crazy.