Hi
Just build a rocket mass heater for a goat in Finland. Haven't born any firewood yet, just tested a little. It is 150 mm (6-inch) system. Wondering how wide the rocket should be in order to function properly. What is the most effective dimensions.
http://www.flickr.com/photos/jaakkola/sets/72157631874133284/
Been there. Done that. Went back for more. But this time, I took this tiny ad with me:
change the world (for the better) with hands on permaculture
