Hand crafted All clay 0$ Clay Rocket Stove (better version)
Lorena Energy saving Stove by “Send a Cow” demonstration of fuel saving all clay with virtually zero expenses hand crafted rocket stove, originated in Africa. This will be best used in greenhouses, while saving energy. When properly dried and fired this turns into one block of clay. Imagine cooking your food on it (or heating water) and leaving it to radiate the heat into your greenhouse! Must watch and build!