Hello! I am in a bit of a predicament at the moment… My kiln is currently down because I’m waiting on a new thermocouple.. I have a business partner that needs a prototype ornament by Monday of next week (4 days). I am making the ornament out of white sculpture earthenware clay that fires to cone 06-04, the commercial glaze I have fires to 05. When talking to a friend he said to go ahead and glaze it once it was bone dry and single fire it. So, I went ahead and glazed my ornament after it was bone dry. I called the place that I get my supplies from to make sure I was firing my test kiln correctly, and he informed me that doing a single fire with the white earthenware was not something I should be doing... Is single fire okay for this ornament or should I scrap it? I know single fire isn’t uncommon, but I have never done it before.
The test kiln is a Vulcan JK-1. I know these kilns fire much faster and cool down much faster than large kilns, so I am unsure how to fire it properly if I have a single fire piece in it.. Since my piece is single fire it needs a longer fire time, correct? How long should I fire for to get the best results?