I'm watching right now Survivorman and he's using the fire piston in alaska, and that looks neat, but I remembered last week when he used potassium permanganate & glycerine. You mix the two together and they produce an almost instant exothermic reaction, great for fire starting.
Plus, they're multifunctional with other uses, really good for including in a survival kit. I know I'll be including them in any I make, thats the easiest fire making I've seen.
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