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Home →
Survival →
Fire →
Fire From Ice
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It was a nice day, so I decided to take another crack at
the ice lens.SUCCESS!
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Profile of the ice
lens - just finished. Note how thick I made it this time. The
dimensions were approx. 4 1/2 inches in diameter and about 2
inches thick. |
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Magnification. The picture shows
how well the lens magnifies letters.
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Spot Focus. This picture shows the
quality of the lens in its ability to make a small spot.
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Smoke! While looking at the focus
of the lens, the paper started to char. This lens had lots of
"power."
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Coal on Cedar tinder. It took
about 30 seconds to get a coal. I started with "raw" shredded
bark (not char.) NOTE THE SMOKE. |
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Profile of the lens after some
more "polishing." NOTE THE SMOKE coming from the
coal in the tinder. |
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Picture of the smallest lens that
I could get to work on this day. I kept making the lens smaller
and smaller and kept trying to see if I could light the cedar
tinder.
With dimensions of 3" diameter and thickness of 1 1/2" - I
could still reliably get a coal. With a 2 1/2" diameter, 1"
thick lens, I seemed to be at a limit. I think a smaller lens
would also work.
As my lens was melting and while I was re-forming it, the
thickness was decreasing fairly rapidly and the profile of the
lens got less and less aggressive. I think this is what stopped
me.
At this point, the ice was also fractured - so the clarity
was poor.
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