So I saw this guy on youtube claiming to make a rocket stove with just 4 cinder blocks. I wanted to see if it actually worked myself, and its great! This is a good little post-apocalyptic cook stove, or just a super cheap introduction to seeing some rocket stove concepts in action.
I might play around with adding more blocks to make a J tube.
We can fix it! We just need some baling wire, some WD-40, a bit of duct tape and this tiny ad: