It doesn't get much easier to build a rocket stove than this:
4 cinder blocks + a gas stove eyelet + 5 minutes
If you want to improve a little on this design add one more block to increase the stove's height for better a furnace. A chimney that is three to four times the height of the diameter of the intake will give you hotter fire.
Definitely will break, stay back from it
5 minutes to stack 4 cinder blocks?
That’s what the wages of this make America great for the rich will get ya …. poverty for the workers
They don’t absorb heat: http://survivalcommonsense.com/build-a-brick-rocket-stove-is-it-safe-to-use-concrete-blocks/
What a waste of 4 blocks that will be destroyed and a total waste of energy building this..
they break very quickly when exposed to fire or hot coals…. might not even last one meal
Concrete explosion ready to happen