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Overcoming the tube friction requires somewhere between 10 and 40 mN·m of motor torque.
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A relatively coarse grid that’s both meaningful and easy on the eyes
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A few strands didn’t quite anchor to the far side of the overhang opening
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The error is essentially constant and does not scale with diameter
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Yes, that was rather anticlimactic.
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The zits are recessed, so the retraction may be slightly too enthusiastic.
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A closeup of the beak shows the crystal-clear drooping filament
