We have pieces with various thickness and clay body (more/less grog but all stoneware clay) so I use relatively conservative schedule:
* 100 C per h up to 600 C
* soak 10 min
* continue at 150 C per hour up to 750C <- edited
* 100 C per h to 987 C (cone 07?)
* soak 10 min.
I used to go up to 1013C (cone 06) but I like it more at 07 so why waste energy
If kiln is really tightly stuffed (lots of pieces inside each other etc), I'll just extend the soak to 15 min.
If there are some pieces that are not completely try, I'll add:
* ambient to 82C in 30 min
* soak at 82 for 1-2 h (depends, how thick and large those pieces are)
* continue with bisque schedule
Few days ago I was firing my large vase (dry, 45 cm high and 35 wide). Just to be on a safe side, I was running my drying schedule for 4 hours (at 82C). It cost me about 1 kWh so it's nothing really.
PS! Damn, why did I buy so small kiln...
Edit: If you spray your glazes, I think you can skip bisque firing, unless clay body you use really needs two firings to get rid of all the organics and other junk.
Edited by Mart, 03 November 2013 - 02:18 PM.