Hello, first time posting! I am planning on making a rocket stove for cooking(need to save money and have LOTS of wood). I salvaged (dump scored) a propane tank and was wondering if anyone can direct me to a pdf/chart on the basics of ratios/dimension for rocket cooking stoves to make it efficient ? I know it's an exact science,I just don't know it amd never made one before. This site is so extensive I thought I would ask to save a long time Searching (I have very limited internet time). Thanks in advance for any assistance and/or directions.