Hi everyone, Emily Black a grad student from University of Utah sent along this blog post about the masony heater build from last years students project.  As u scroll u will see the clay plastered heater.

http://cityhomecollective.com/design-bluff-good-stuff/

This unit is 36″ by 27″ and 8′ tall.  Fire box is 14″ x 14″ which uses12″ firewood. That gives u 4 faces to a cord of firewood. Unit can be fired every 8 hours with 20lbs. Of firewood.  Putting out  approximately 15000 btu to 18000 btu’s per hour.”