I built this from an old propane bottle. My intention was to heat my tent or camper this summer. Our summer nights in the Colorado high country can get quite cold. I've realized that I can burn charcoal and hickory (or whatever other wood) and run some pipe from the heater to my electric smoker. This will give me the smoke ring and stronger smoke flavor my smoker has always lacked. I can also do some cold smoking. It will be like the mailbox addition I've seen but waaay cooler. Or hotter?