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| Boro Room -- For Boro-related tips, techniques, and questions. |
2008-02-11, 2:14pm
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Senior Member
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Join Date: Dec 24, 2007
Location: Orlando, Florida
Posts: 1,233
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Granite in Kiln?
Can I use granite tiles inside for a kiln shelf/furniture? Granite's melting temp is supposed to be 3500 degrees F, so it shouldn't melt in a 2350 degree kiln? I was thinking that maybe glass wouldn't stick to it, so I wouldn't have to do kiln wash/glass separator?
Would this work, or is it nuts  ? Thanks!!
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2008-02-11, 3:20pm
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Curmudgeon
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Join Date: Apr 12, 2006
Location: Victoria BC Canada
Posts: 5,810
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Quote:
Originally Posted by Hels
Can I use granite tiles inside for a kiln shelf/furniture? Granite's melting temp is supposed to be 3500 degrees F, so it shouldn't melt in a 2350 degree kiln? I was thinking that maybe glass wouldn't stick to it, so I wouldn't have to do kiln wash/glass separator?
Would this work, or is it nuts ? Thanks!! |
Although granite wouldn't melt, it would assuredly crack.
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2008-02-11, 6:31pm
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Borovangelist
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Join Date: Jan 26, 2007
Location: Auburn, MA
Posts: 3,002
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You also run a slight risk of it going kaboom on you if there's moisture trapped inside it.
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2008-02-11, 6:58pm
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honorary bead lady
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Join Date: Jan 14, 2008
Location: Mostly the doghouse
Posts: 5,180
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On another forum someone was talking about using pizza baking "stone" for a kiln shelf.
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2008-02-12, 1:54am
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Senior Member
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Join Date: Dec 24, 2007
Location: Orlando, Florida
Posts: 1,233
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Thanks for the replies . I hadn't thought of cracking or trapped moisture.
I don't have a kiln yet, so when I get it, I'll test a small piece just to see what happens to it. No wonder no one uses them as a shelf... I just thought because they were so slick and nonporous that they'd make a good nonstick surface (like graphite), but I guess someone would have mentioned that by now if it worked that way  . I appreciate the replies!
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2008-02-12, 6:39am
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ManBearPig
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Join Date: Jun 28, 2005
Location: Roanoke, VA
Posts: 8,540
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You don't need to use any kiln wash or anything like that unless you are fusing. Just stick your stuff right in the kiln on the brick or fiber blanket. I have used graphite in my kiln before, and it works, but over time it deteriorates.
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2008-02-15, 7:45am
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Senior Member
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Join Date: Dec 24, 2007
Location: Orlando, Florida
Posts: 1,233
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Thanks Cosmos!
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2008-02-15, 8:45am
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Borovangelist
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Join Date: Jan 26, 2007
Location: Auburn, MA
Posts: 3,002
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I keep a piece of fiber blanket in mine when I'm not fusing so it'll cushion the landing when I pitch marbles and stuff in there. Plus stuff rolls less. It's cheap enough that I just replace it every couple of months.
Just be careful because heating it up speeds up it's breakdown making for some respiratory nasties.
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