prolly how the pyramids were built.
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Super cool!
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I thought the inventor called this device a "sinter"?
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"And when there was no printer ink, we ate sand." - H.I. McDunnah's cellmate Raising Arizona.pic.twitter.com/xS0EINHZLM
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How fun is this device.
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Fresnel lenses are in the older big screen pre-LCD LED non-CRT TV's.https://youtu.be/xExXjXm0YV0
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He'd make a killing in Tanzania if he went mass production. We have plenty of sun and sand. How about making just simple glasses?
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fascinating...
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c.f. Corey Doctorow's 'The Man Who Sold The Moon'https://www.goodreads.com/book/show/26883861-the-man-who-sold-the-moon …
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How much


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