I learned that in the Scouts many years ago too. Unfortunately, in practice, the matches really "go bad" quickly after being waxed. It may be because the wax seeps into the heads and renders them useless after a short time. I found that a clear lacquer works better, but I stopped doing that too. I carry SA matches in my old BSA match safe and a Swedish Firesteel, let it rain:) Cheers
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No, I am not Bear Grylls, but I stayed at a Holiday Inn Express last night and Bear was there too!