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December 16, 2008 08:52 PM

How do you make a fire using flint? Specifically, what's the role of magnesium?

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December 17, 2008 01:53 AM
Striking flint with steel will create sparks, but the sparks don't do you much good without a material that is likely to catch on fire with just a spark. Magnesium is one such material.

Another material that I've used is called "char cloth." To make it, cut some old cloth into small pieces (2" squares work well). Put the pieces into a metal can with a lid (like a mint tin or similar) and put the can into a fire. After a while the cloth will heat up and become charred (hence the name).

Char cloth, when struck by a spark, will very easily start smoldering. It will continue smoldering for a relatively long time, which gives you a decent amount of time to get your tinder to catch on fire. If you package a smoldering piece of char cloth into some other tinder (like paper, birch bark, etc.), and blow into it, you can get that to start on fire. Quickly drop the flaming mess of tinder into a bigger pile of tinder and kindling, and you have fire!
Asker's Rating:
• Thank you, that was exactly what I wanted to know!


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December 16, 2008 09:08 PM
Its not a direct role, but small..

As you strike metal upon the flint to get the spark the act of magnitzing the metal aligns the electrons in metal in one direction and thus easier to make the spark

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December 16, 2008 10:25 PM
Flint only supplies the spark. The magnesium itself needs to be shaved off into a little pile on your tinder. When the magnesium burns, it causes the tinder to catch fire as well. Swedish firesteel is nice ;)

http://www.thinkgeek.com/gadgets/tools/754d/
http://www.thinkgeek.com/images/products/zoom/light_my_fire.jpg


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December 16, 2008 10:33 PM
Hmmm... that seems wrong shareme. Never heard of that theory and I seriously doubt aligning electrons has anything to do with making a spark - but then I never heard many theories about flint and fire starting.

What I do know is that magnesium burns at a very high temperature: "sparkler" sticks are made of magnesium and it's also used in chemistry to get higher temperatures for certain reactions. It's easier to light when in small strips of flakes, which the flint would produce.
Knowing that, it seems logical for it to be used as a fire starter.
I think the 'rocks' on lighters are made of magnesium also - or an alloy containing magnesium...
Source(s):
http://en.wikipedia.org/wiki/Magnesium


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December 16, 2008 10:39 PM
You don't need magnesium. You can do it with just flint and steel. The magnesium is like a dry charcoal starter. ( it does help )

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