I'm kind of short on funds but I did mix up some clay that I had in the back yard and made a brick of it. Then I fired it up in the wood stove and the thing did not crack and looks like it was made of concrete now.
The thing I was wondering is if instead of having to purchase fire brick, if I could instead make my own adobe bricks for the burn chamber?
the advantage of firebricks (in my country atleast) are that they swell and shrienk less when exposed to heat, and they can endure higher temperatures than other bricks.
maybe your clay happens to have those qualities.
You can expect those homemade adobe brick to fracture and disintegrate. Normally I would recommend fire brick to at least serve as a lining as they hold up to the stresses of repeated hot/cold cycles. If you are able to fashion bricks from local materials, there is no concern about the cost. Try it out. When the adobe fails, you can replace with more of these homemade adobe bricks. If it is worth your investment of time and effort, go for it.
Seed the Mind, Harvest Ideas.