Hello from Ohio. I came across this forum while doing research on how to modify my mass rocket stove/heater in order to get optimum BTU. I was introduced to the rocket stove concept a few years back and I built a rough working model. I know I can make this thing really do what I want but I need specific input sometimes. Thank you so very much for putting together this forum. I am really excited to see what other people from around the world are doing and I am humbled to be in the mix with such talent. Brock