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Fire bricks VS regular bricks?
Just some info from my recent experience that at first was frustrating to me.
I searched google for fire bricks, and refractory bricks. Even Wikipedia wasn't much help.
There is more than one kind of "fire brick." My city has a brick manufacturing plant. I called them and asked if they sold fire bricks. They said that they did but they didn't sell to the public. I spoke with the guy a little while asking questions and once he knew I only wanted 5 or 6 bricks he said he would just give them to me. They ended up being bricks for the inside of a fire place. They are hard and heavy, but I guess they can take the direct heat of being in a fire, where as regular bricks will crack and spall when heated and cooled in a fireplace environment.
So recognizing that these were not the brick I was looking for, I called a local ceramics/pottery store that has classes and sells supplies too. I asked for "bricks that go inside of a kiln" and they said they had them. They sold for $5.99 ea. They called them "soft fire bricks." I ended up with 6 of those and I'm using them for my small propane forge.
For anyone else looking for these bricks I hope to save you some time and frustration. You are looking for SOFT fire bricks.
The hard ones would be good for making a pizza oven though, which is another of my projects.
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