Cooling rate below 750 degrees
Posted: Sat Dec 20, 2003 2:16 pm
Hi, this is my first post to the board, but I have been lurking around for a while. I checked and didn't see the answer to my question ... I apologize if it has been asked before.
I am in a bit of a crunch for Christmas. Usually, I fire and allow the kiln to cool down overnight (which means I can get a maximum of one firing in a day). I read that once you get down to 750, that if you have a 12" diameter, 1/4" thick piece, you can cool the rest of the way to room temperature in 80 minutes. My kiln takes WAAAY longer than that (probably 6-7 hours).
Is there some way I can speed up the cooling process? I can pull out one of the peep-hole blocks, or put a small wedge in at the top to allow air in. However, I don't want to risk thermal shock (since I'm ALREADY behind for Christmas), but I'd like to try to get 2 firings in a day.
Any suggestions or advice would be GREATLY appreciated!
Thanks again.
I am in a bit of a crunch for Christmas. Usually, I fire and allow the kiln to cool down overnight (which means I can get a maximum of one firing in a day). I read that once you get down to 750, that if you have a 12" diameter, 1/4" thick piece, you can cool the rest of the way to room temperature in 80 minutes. My kiln takes WAAAY longer than that (probably 6-7 hours).
Is there some way I can speed up the cooling process? I can pull out one of the peep-hole blocks, or put a small wedge in at the top to allow air in. However, I don't want to risk thermal shock (since I'm ALREADY behind for Christmas), but I'd like to try to get 2 firings in a day.
Any suggestions or advice would be GREATLY appreciated!
Thanks again.