[TheForge] Re: Bricks- Light vs heavy

[Jeffrey Polaski]

I'm sure someone who actually knows can answer this, but the
"insulating" bricks seem to be better *insulators*, so I imagine they
loose heat the slowest. But they have less mass, so they cooler sooner
than the heavy-duty ones.

The heavy-duty ones take a lot longer to heat up, and stay hot much
longer. I can still feel heat from my forge for 8 -- 12 hours or so when
I use heavy-duty bricks. 

BTW, is there a better name for these bricks, other than "insulating"
and heavy-duty? Is that clear to everyone? Is that the terminology
people use when they talk about these things?


Jeff Polaski
Research and Graduate Studies Webmaster
University of California, Irvine
http://www.rgs.uci.edu/
949.824.6363

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Ron Childers
Sent: Monday, April 17, 2006 12:33 PM
To: 'Sponsored by ABANA'
Subject: RE: [TheForge] Re: Bricks- Light vs heavy

Which loses heat the fastest?


All the insulating bricks I bought and used cracked and are now in
chunks... I thought it was just because I bought the cheap ones. I
didn't realize all insulating bricks had that problem. 

Well, I think I'd still recommend using the light-weight "insulating"
bricks... but I think it's better to always use a hard lining over them,
like kiln shelf or castable refractory.


Jeff Polaski
Research and Graduate Studies Webmaster
University of California, Irvine
http://www.rgs.uci.edu/
949.824.6363


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