Oddbean new post about login | logout Thanks I look forward to future posts! I also like the use of the permaculture lens on your activities. I'm also glad you talk about intermittent mining. We have an old octapus furnace in our basement, which operates via thermosiphon rather than forced air. It originally burned coal, now fuel oil. I've tested it with wood as well. The plan would be to hook a miner up during winter to supplement our masonry heater.