A rocket mass heater is a combination of a rocket stove and underfloor heating. A rocket stove works by having such a strong draft created by the heat rising up the chimney that the flames can’t ...

[Little Aussie Rockets] starts off the build by fabricating the feed point for the fuel out of steel, and attaching it to a chimney section. This is the fundamental part of a rocket stove ...

Imagine this: a 12-year-old boy in a backyard, stacking bricks into the shape of a 2-foot box. He's asking for matches, eager ...