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Post by offtrail on Dec 30, 2016 21:40:58 GMT -7
Watching some utube videos today and seen Dave Canterberry??? use his knife, sharpening stone and charcloth to throw a spark onto the charcloth. Why not, sharping stone is made to remove metal and we all know it's the metal that makes the spark. Could be some of you seen this already, it's a first for me and thought i'd share it. Along the same lines you could also use an old piece of grinding wheel...right?
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Post by Cwi555 on Dec 31, 2016 0:05:30 GMT -7
Watching some utube videos today and seen Dave Canterberry??? use his knife, sharpening stone and charcloth to throw a spark onto the charcloth. Why not, sharping stone is made to remove metal and we all know it's the metal that makes the spark. Could be some of you seen this already, it's a first for me and thought i'd share it. Along the same lines you could also use an old piece of grinding wheel...right? That's probably the video you refer too. Not all steels can be made to spark. It depends on the alloy of the steel, angle of incidence of the strike, surface area exposed to the strike, and any other special characteristics such as heat treat etc. Grinding wheels are typically a composite with what is called the 'bond' embedded with various types of abrasives. As the wheel spins, the work piece is struck by the abrasives in rapid succession. You will see sparks come off when grinding various ferrous materials. The nature of those sparks vary and can be used for a rough approximation of what it is by spark color and type. en.m.wikipedia.org/wiki/Spark_testingA slow hard strike over a relatively narrow surface area, may or may not produce a spark. What it will do about every time, is knock out the embedded abrasive from the bond. They are designed that way for a reason. With rotation the wheel has to maintain balance or it will tear itself apart from unbalanced centrifugal forces. It also serves to distribute heat within the wheel. Having had more than one grinding rock explode on me, I took that lesson to heart. In theory with the right combinations it could be made to work. Imo it would be a sub optimal solution at best, but worth keeping in the back of your mind. |
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Post by cajunlady87 on Dec 31, 2016 7:31:38 GMT -7
I watched the video and it was an interesting idea. Thanks cwi for extra thoughts on the subject, it's something else important to remember. My thoughts are desperate means in a life threatening situation is to go with what you've got and try like hell to get something going. Of course we all know to be prepared at all times. Even my purse contains three fire starting methods which I'd normally carry anyway so no excuse for me.
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Post by offtrail on Dec 31, 2016 13:44:35 GMT -7
My dad was a spark tester so yes different sparks form different types of metal. Yes that was the video I seen, only one thing bothered me about the video. Did you notice how fast he got that char lit,in real life i doubt anyone could do it that fast...if at all. I agree with both of you, carry the knowledge of what could work... when normal means are not available.
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Post by Cwi555 on Dec 31, 2016 14:12:04 GMT -7
My dad was a spark tester so yes different sparks form different types of metal. Yes that was the video I seen, only one thing bothered me about the video. Did you notice how fast he got that char lit,in real life i doubt anyone could do it that fast...if at all. I agree with both of you, carry the knowledge of what could work... when normal means are not available. Charcloth doped with an accelerant/oxidizer will catch that fast. |
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Post by Cwi555 on Dec 31, 2016 14:42:39 GMT -7
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Post by woodyz on Dec 31, 2016 15:33:06 GMT -7
I bought 10# of Magnesium flakes and have some sprinkled in dryer lint. The fire to get it started has to be hotter, but the lint gets it going. Once it gets started it is hot enough to start most anything.
But you need to be careful of the flash it is very bright and any moisture once it starts to burn will spread it out, creating hydrogen.
put it out with dirt not water.
those blocks of magnesium that are mostly worthless because they are too hard to scrape shavings from can be drilled into curls with a small drill bit and work very well
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Post by offtrail on Dec 31, 2016 20:35:20 GMT -7
Thanks for the link looks interesting |
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