Chaz
if its fine enough it can be lit with a single spark. Just use tiny bits to experiment. The secret to starting a camp fire with magnesium is to contain the magnesium flakes in something, like a dried leaf, such that you can set your fire striker on the leaf and then strike your knife down against it throwing sparks on the Magnesium. It burns at a very high temp, but it gives off a limited amount on heat so you must use a tinder so fine that it catches immediately from the magnesium fire. Consider the Mg to be like a match head. <img src="/forums/images/graemlins/tongue.gif" alt="" />
Jim <img src="/forums/images/graemlins/cool.gif" alt="" />
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These are my own opinions based on wisdom earned through many wrong decisions. Your mileage may vary.