Lori Doty on sun 15 may 05
Here a lurker does well.
I got for free (from a friend who works at a factory that rebuilds its
industrial kilns- used to heat up electrical transformers- on a 3 month
basis) some what appears to be hard IFB. Best part is that I can keep
getting these for free and might one day be able to build a gas or wood
fire kiln with them if I get enough of them. I only have some partial
info on them. The box has the following on it:
G-231
25 1
9x4
5021 A
The bricks feel rather heavy compared to some other soft firebrick of
comparable size which makes me think they are hard brick. I saw a large
band of red/pink on one of the bricks and no other identifying marks.
Most of these were cut off of larger bricks and are of some regular
shapes but probably not standard. The amount I have of these is
probably 2 cubic feet if my math serves me right.
So my question is what temp would these be safe to use up to? Also
could they be used as stilts in a wood firing or electric?
Lori Doty
Nurse/Potter
One day I will turn the tide.
Marc Ward on mon 16 may 05
>So my question is what temp would these be safe to use up to? Also
>could they be used as stilts in a wood firing or electric?
"G" stands for IFB's made by AP Green. The 23 denotes 2300=B0F. I
know of no brick with the suffix of just L.... the suffix LI, on the other
hand, stands for low iron.
You can get by in a raku kiln with using a brick like this to support
ONE shelf. I would NEVER use these at stoneware temps or in a
wood kiln as supports.
Marc Ward
Ward Burner Systems
PO Box 1086
Dandridge, TN 37725
865.397-2914 voice
865.397-1253 fax
wardburner@aol.com email
http://wardburner.com
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