[Hanfgeist]

I had a problem with my jet boil, the gauze on the burner failed through metal fatigue caused by thermal expansion and contraction during normal usage, and fell into the gas well, the next time I ignited it, the metal pieces directed the gas through the vent below the burner cup, where it ignited and set fire to the plastic surround. This is a potentially hazardous fault and you should check regularly that it has not happened on your jet boil unit.