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All in all, a modest success
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It’s a handheld gun that drives two inches of hardened steel nail into solid concrete
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The first layer must absorb the entire difference between the desired thickness and the actual nozzle-to-platform distance
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Think of this as the one you must build to throw away…
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So you can plot on cheap and readily available A-size paper
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The bags lost a bit under 130 g during 10 hours
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The camera’s 640×480 VGA resolution is marginally Good Enough for the purpose
