last night was my first ever glaze firing, and I came in a little under temp.
Tonight I'm going to give it another shot and I have a couple of questions.
How fast can I ramp up the temperature? do I just start it on high, or go through medium and low first?
I'm going to switch out the witness cone for a new one, should I also change out the kiln-sitter cone?
Since this was my first glaze firing, I had a LOT of glaze tests in there. do you think that re-firing is going to give me a good idea of what the glazes will look like in the future, or should I assume that the tests won't be a good representation?
some technical details: I'm using commercial clay and glazes, using an electric Cress 23 kiln (small studio size). I bisqued to 04, and I was trying to fire to cone 6. my witness cone began to bend, but is still mostly straight, so I estimate that it got to cone 5.
last night's firing was 2 hours on low, 2.5 on medium, and it took 5 hours on HIGH to get to cone 5 (total firing was 10 hours). That seems long to me, I would have expected it to reach temperature a bit faster. does that sound normal to you?
thanks for all your help, this is pretty exciting!!