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I cut some transparent acrylic pencil guides to go along with the 45° Triangle Ruler: The guides along the rear are the 3D printed versions from a decade ago. The three transparent guides taught us: So the engraved ring on the two in the front row carries a cheerful Sharpie color to make them stand…

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In this end-on orientation, drilling torque can rotate the tube
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NYSDOT seems oddly reluctant to perform routine brush clearing
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Not what you’d expect to find in a bank lobby
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Apparently window hardware isn’t hardened against prolonged UV exposure
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There should be no problem shining a light up through the glass envelope
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All in all, it’s working fine
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Fire in the bottle!