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The motor brushes seem to be a pair of stiff wires
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Combining the two fill patterns produces a smoother bottom in the pocket
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I was … reluctant to glue the halves together
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I don’t foresee my personal habits changing any time soon
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The little target in the middle gets centered on the nozzle by feel
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The least awful way to make simultaneous X and Z axis adjustments seems to be by feel
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Fire a couple of test shots to center the mirror on the beamline
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A target directly on Mirror 2 showed the beam was badly off-center
The Smell of Molten Projects in the Morning 