Glass cooling

[Susanbuckler]

Hi
So, it's 8 PM and I have a slump cooling down in the kiln...temp is now 300. I have another slump ready to go in and would like to get it in the kiln before bed tonight. At what temp can I either remove the peep hole or prop open the kiln and if so, how much can it be opened? I'd like to have this cool a bit faster but of course I don't want to damage the integrity of the piece, a simple two layer 8 x 8. Thanks for the advice.

[Susanbuckler]

I should have searched the newbie forum first....found the answer....at 500, can prop it open 1/4 inch

[Bert Weiss]

I should have searched the newbie forum first....found the answer....at 500, can prop it open 1/4 inch

300 is more conservative.

The more you have invested in a piece, the more conservative you should be with handling and time schedules.

[Susanbuckler]

Thanks, Bert. Good advice about investment in a piece. It is still so new to me. I am eager to fire more pieces as I experiemnt with techniques and it is such a slow process. My Olympic Champ xl kiln is too small!

[Laurie Spray]

At 300 i would vent it a tad but I would not open it until 100. Remember that the inside of the glass is hotter than the outside layer. If you take itmout at 100 i would wrap it in a towel for a couple of hours.