Carol Morgan wrote:This is my first post on Permies. I live in Wales, Ianto's country, in South Wales. I read about Rocket Mass Heaters and Stoves about three weeks ago and at 10.30 at night. Went to bed a few hours later and couldnt sleep for wanting to make one straight away! I wanted to use reclaimed supplies in order to save items from waste and also to keep the cost down while I experimented but this is proving to be quite difficult as the items are not freely available. Natural clay is going to be a problem, is there a substitute for it? On a different thread someone suggests using cat litter but another post says that cat litter isnt clay The oil drums are probably going to be a little easier, my question with this is, how to light a fire in them to burn the paint off? The first one I tried was a smaller one, approx 25/30 gallon size and because the lid has to stay on, its a big deep bin and I think there was not enough oxygen to keep it alight I imagine the bigger drums would be even harder to keep the fire going? Or do I put it on a fire rather than light a fire in it? I thought that may distort it.