Friday, November 06, 2009
PS after the firing
which took 29 hours and 23 minutes, I 'reviewed' the schedule (kiln still too hot to unload). I found that I had made a slight error when I entered the firing schedule...I thought I was telling the kiln to advance from 250F to 2000F at a rate of 300F/hr at which time it would advance at the rate of 108F to 2185F. But, unfortunately, I really told it to advance to 200F at a rate of 300F and then to advance to 2185F at a rate of 108F. Get it? The kiln crawled from 200F to 2185F at a rate of 108F per hour. Well, that does make for a long, slow firing! Once the kiln is empty I will fire it up again so I can see what the bottom element is doing. Hopefully, there is no problem with the elements--which are pretty new--and the whole problem was my careless mistake. Usually I 'review' the schedule if I change it--but not this time! I peeked in and saw that on the top shelf the self-supporting ^6 cone was bent to about 2:00. So I have yet to know what the rest of the kiln achieved. Stay tuned.
Posted by Sister Creek Potter at 8:57 AM