At What Rate does a Kiln Cool Down?

Stacy · February 19, 2008, 12:47:30 PM

I'm trying to create a excel spreadsheet which will tell me roughly how long a programme will take in my kiln.

I know that it is probably extreamly variable due to different condidtions but does anyone have an idea of an approximate rate that a kiln will cool down when the programme has finished. Or a way that I can calculate it. Is it going to be different on each and every firing? or will it matter how high the kiln is when the programme is done?

I would be more than happy with an approximation...

glassworks · February 19, 2008, 01:34:47 PM

depends on ambient an the kiln.. the bluebird cools naturally at over 100 deg / hour here.. although our internal temp in the barn is only 5 degrees... the xl, which is fire brick lined, cools at less than 40 degree's per hour in the same condition (and should be about the same for an sc2/3, although the sc's with bead doors have a small opening when the door flap is slightly raised... the sc2 cools down slightly faster than the sc3...

Stacy · February 19, 2008, 01:37:45 PM

Thanks hunny!!! xxxxx

Thats exactly what i needed!

Stacy · February 19, 2008, 01:39:35 PM

Now - thanks to my wizzy spreadsheet I know that my pot melt thingy will be ready to come out at about 9:00pm give or take 30 mins or so

Billie · February 19, 2008, 01:41:46 PM

Very clever!

Stacy · February 19, 2008, 01:53:27 PM

Quote from: Billie on February 19, 2008, 01:41:46 PM
Very clever!

you say that now... knowing my luck with excel it will be done at 10am tomorrow morning...

Zeldazog · February 19, 2008, 01:59:16 PM

Oh, I want to do a pot melt thingy!! But I can't in my home kiln, it doesn't go hot enough $:-\$

Please post a pic, I will be checking at 9.05 pm!!!

Stacy · February 19, 2008, 03:08:03 PM

Quote from: zeldazog on February 19, 2008, 01:59:16 PM
Oh, I want to do a pot melt thingy!! But I can't in my home kiln, it doesn't go hot enough $:-\$

Please post a pic, I will be checking at 9.05 pm!!!

I only have a little kiln so its just a tiny tiny one... it should come out as about 1" in diameter.... i thought that might be a nice size to put a bail on the back of

♥♥Tan♥♥ · February 19, 2008, 03:09:18 PM

yay pot melt pot melt, pics please, from every angle and then a few more and how you did it and what you think of it and how hard you found it

Stacy · February 19, 2008, 03:11:12 PM

Well I can tell you now that I used a egg poacher and some mesh you use to fix rusted out old cars... it soooooo professional!

Stacy · February 19, 2008, 07:06:58 PM

OK - there will be no pictures and we shall never mention the pot melt fiassco again....

Sal · February 19, 2008, 07:15:31 PM

Oh no! I was really looking forward to finding out what a pot melt is as well! What is it

Zeldazog · February 19, 2008, 07:41:58 PM

Why, what happened, Stacy? You can't leave us hanging on like that!

Stacy · February 19, 2008, 07:49:52 PM

errrrr.... it melted..... along with the egg poacher and mesh thingy that I rigged up

Its all one sort of metal and glass blob....in the future when I am a world renowed glass artist I think I will call this my industrial era.

Going to have another go at the end of the week when I have rigged up something a little more unmeltable!

Stacy · February 19, 2008, 07:53:01 PM

Quote from: Sal on February 19, 2008, 07:15:31 PM
Oh no! I was really looking forward to finding out what a pot melt is as well! What is it

Its when you put a load of glass ontop of a wire mesh or pot with holes in it. You pop it in the kiln and the glass melts through the holes into a puddle on the kiln shelf - you put lots of different colours in and they all swirl together.

Well that was my interpretation anyway - but we know how that ended!

At What Rate does a Kiln Cool Down?

glassworks