under fire bisque
Posted 16 November 2012 - 01:39 AM
Posted 16 November 2012 - 02:36 AM
why did it go off in 5 hours, does your sitter have a timer and you neglected to put enough time on it? was the cone in the sitter bent at all? more info would help the real experts here help you.
Posted 16 November 2012 - 04:34 PM
I did restart it at 12:39 pm with the cone in the sitter and a wittiness cone and I set the timer to 17 hours. Is this enough time? And thank you for your reply
Posted 16 November 2012 - 06:42 PM
"But it does move," said Galileo under his breath.
Posted 17 November 2012 - 12:42 AM
yes, these forums are great but we all have different experiences. i have never had a timer on a kiln sitter until one i was given a couple of years ago. it still makes no sense to me but i have it written down in that studio and refer to it when i fire that kiln. that is why i suggested the possibility that the timer was set wrong. i've done that. once was enough.
is the "cone" in your sitter a pyrometric bar with four sides all the same or is it an actual cone that tapers? something else to consider.
have fun with your kiln and happy potting.
Posted 17 November 2012 - 04:12 AM
I agree though that 04 is a bit high for bisque. I try to fire to 05 for my bisque and glaze to cone 6 (for stoneware, that is!) You didn't mention what kind of clay you are using -- earthenware or stoneware? I fire to 04 bisque, and 05 for glaze on earthenware. But you should ask whoever sold you the clay what cone to fire to, as clay bodies are all a little different.
Posted 17 November 2012 - 06:18 AM
Measure your kiln if you don't already know the dimensions. Find the Skutt Kiln that comes close in dimensions and maximum firing temperature and you will find a lot of information on how to fire your kiln. http://www.skutt.com...Manual_2002.pdf