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The slug reduces the pretravel to nearly zero
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The wavy upper line shows the stiction as the Z axis drops in 0.1 mm steps
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It’s spot on for all weights above 1 g
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It’s definitely not a low-friction / low-stiction drag knife holder
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There may be a schematic somewhere in my collection
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A tapered pin locks the three shaft rods
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Two vehicles aligned almost perfectly nose-to-nose
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Capacitors as charge-storage devices with An intro to function generators and oscilloscopes
The Smell of Molten Projects in the Morning 