Hello all first time post for me, have been reading many post and learning alot about rocket stoves. I have build a 6" rocket stove with a 55 gal barrel out side to learn and test on. I would like to build a new rocket Heater inside with no barrel, with a mass bench or maybe a bell type chimney that will be a 6" system. Thinking of putting a steel plate on the top of the stove and turning the exhaust down thru 3 runs that will measure 2"x6" toward the floor then go into the mass bench. This will be all built with fire bricks and finished with ether brick or stone. Just wondering how this will perform as a heater system , has anyone done this, is there any pic of such a system. I would like to keep the stove as small as possible but still work well. Thanks for any info on this.