I heard my brother say once when I had the gas axe in my hand, Give him half an hour an we willl know if he is fixing it or scrapping it. I learnt the hard way to plan be there at least an hour after using it, Ideally be on site 4 hours after using a set of cutting gear fire watching, to make sure everything is O.K. I have found a smouldering rag nowhere near the work area Two hours later.