Author Topic: 1 stone + 1 stone = 1 thick stone ?  (Read 751 times)

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Offline bioubiou

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1 stone + 1 stone = 1 thick stone ?
« on: July 28, 2011, 11:48:12 AM »
Hi,

I'm having trouble finding a 1" thick cordierite stone, but I already have a 5/8" one. It does not have feet. So if I stack another 5/8" stone on top of it, will I have something that works like a 1"-thick stone ?

Thanks !
Beru


Offline Lespaul20

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  • Location: Iowa
Re: 1 stone + 1 stone = 1 thick stone ?
« Reply #1 on: July 28, 2011, 09:50:16 PM »
I would say no. Because the contact between the two wouldn't be perfect the heat wouldn't transfer as efficiency. Similar reason you need thermal paste between a heat sink and a computer chip. I'm sure two is probably better than one but not as good as a single mass. I've never actually tried this so I might be wrong.

Offline Adam T

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  • Location: Michigan
Re: 1 stone + 1 stone = 1 thick stone ?
« Reply #2 on: July 29, 2011, 12:13:55 PM »
Hi,

I'm having trouble finding a 1" thick cordierite stone, but I already have a 5/8" one. It does not have feet. So if I stack another 5/8" stone on top of it, will I have something that works like a 1"-thick stone ?

Thanks !
Beru


I think in some ways it will be similar to having a thicker stone and some ways it won't. There will be more mass to retain heat with the extra stone. I wouldn't expect them to conduct heat from one to the other just like a single large stone. The heat transfer may be good enough that it doesn't matter but I couldn't say. They certainly won't act like a thicker stone when it comes to strength. If you bring them up to a temperature that would crack a single stone they are still going to crack.

I haven't used a stone from this place but if you are still looking for a thicker cordierite stone and don't mine a kiln shelf you should check out this page... http://www.axner.com/refractories-and-firing.aspx

And if you need something they don't list I'd suggest checking out Laguna Clay's catalog http://www.lagunaclay.com/catalog/  Working through a local distributor http://www.lagunaclay.com/distributors/ close to you, you can have it shipped pretty cheap if not for free if you pick it up at the distributor.
« Last Edit: July 29, 2011, 12:15:55 PM by Adam T »


 

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