Yeah you could but with rocket stoves there is a science to it all working without spitting back nasty gas fumes. If I could get my hands on one to measure everything and make a CAD diagram it would be easy. But really considering that a powered pellet stove that is decent goes for 3600-6000 it is not bad and you would save amazing amounts of money in the long run due to not having constant failures of ALL the parts after year 3.