This kind of thing is one of the best parts of the whole "rocket stove" concept. Make it out of local dirt and some scavenged stuff, and dramatically improve things. Lots of reporting of things like this on the aprovecho site.
WHAT is your favorite color? Blue, no yellow, ahhhhhhh! Tiny ad:
A rocket mass heater heats your home with one tenth the wood of a conventional wood stove
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