Esther Earl. (Redirected from Esther Day) Esther Grace Earl (August 3, 1994 â August 25, 2010) was an American author, internet vlogger, online personality and a Nerdfighter, as well as an activist in the Harry Potter Alliance.
To begin controlled cooling, allow the kiln to cool as fast as it can for the first 300Â° so the controlled portion of the firing is taking place about 300Â° lower than the cut-off temperature.
As a ceramics student, I was eager to learn about firing. I fired a few kilns, and read what I could on oxidation, reduction, primary and secondary air, etc. Mostly I fired to Cone 10 in downdraft kilns. Fortunately, slow Cone 10 firing in downdraft kilns tend to be even in temperature.