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 ...

A rocket stove offers a practical way to concentrate fire’s heat in one direction and reduce fuel consumption. Whether you need to purify water, cook food, or simply stay warm, this build is one ...

In fact, on July 24th, the HEXA rocket was officially certified as Open Hardware by the Open Source Hardware Association (OSHWA) — a first for a DIY rocket, as far as we can tell.