Boiling water for coffee or heating up a can of soup is a cinch on any of the little backpacking stoves. But with a solar cooker? Sun-powered ovens are well known, burning glasses have existed as long as lenses but a solar stove is something new under the sun. Now the availability of low cost plastic Fresnel lenses makes a lightweight sun-powered folding camp cooker possible and even inexpensive if you build it yourself. This solar stove is practical. It boils enough water for a cup of coffee in a few minutes and takes a little longer to heat a can of soup. It folds compactly and has no loose bits of hardware to get lost. It weighs just 2 lbs. You don’t have to lug fuel for it. But, unfortunately, it works only when the sun shines.
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