nicely done

It's almost a rocket stove!

Not a bad rocket stove!

Ayyyyyy that's neat. Will keep that in my back pocket.

It's working good! Once those blocks heat up they keep you warm from a distance.

Yes

Works incredibly well, good in any kind of emergency where you need a stove. Super efficient rocket stove. The downside, after the first fire the cinderblocks are compromised, totally brittle. They will fall apart when you take it down. You can get a few uses out of them though, they usually break with the corners intact first so they have enough structurally integrity to use a few times before you need to replace the blocks.

Almost? If you stack it right, like this one is, you get 100% combustion once it's hot.

Cool rocket stove man

Concrete that isn't explicitly for heat exposure can explode when exposed to fire because of trapped water inside boiling.

Creative

crackhead BBQ grill

Very nice.

A Sarajevo sizzler. Nice.