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That slight mismatch adds to the overall positioning error
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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
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A piece of right-angle polypropylene backed with hot pink vinyl
The Smell of Molten Projects in the Morning 