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Fresnel Lens – Fire Starter on Sale

Original price was: $3.99.Current price is: $2.00.
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Estimated Delivery:
15 - 22 Mar, 2025
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Description

Fresnel Lens – Fire Starter

 

These credit card sized Fresnel lenses are easy and convenient to use.

  • Fit in a wallet
  • Flexible & durable 
  • Simple direct sunlight and you have fire
  • Plenty of surface area to produce a blindingly hot spot
    • A Fresnel lens works by focusing all the sunlight passing through it into a tiny, burning spot. Magnification power has nothing to do with the intensity of that spot only its distance from the lens. What does affect the intensity of the spot is the size of the lens. More surface area means more sunlight available to focus.

      These have plenty of surface area to produce a blindingly hot spot that will smolder most natural tinder sources, which can then be blown into flame.

      This is very old video demonstrating how to light a fire with a fresnel lens… and rabbit poop.

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