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The Step2 rolling garden seat took an untimely fall
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The general idea is to align a short stack of CDs on the rotary table, close enough to the center, that you can gnaw away on the top platter and get nearly concentric results.
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The total range is 0.002 mm = 78 microinch, so the steps are on the order of 666 nm: separated by just about exactly one wavelength of the red He emission line.
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All the vital pieces in one convenient assembly!
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It looks like a nice one, so it’s maybe 10% efficient and could pump 1.5 W
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Just got two eyeglasses from a different supplier halfway around the world, with satisfactory results.
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The cutouts look definitely impromptu
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It was easy to find the van: simply follow its trail.
The Smell of Molten Projects in the Morning 