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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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The bushing emerges unscathed, ready for another platter
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Those spots of cold-white LED lighting will gradually expand
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There’s always room for one more
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This is about as small as seems possible
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One occasionally swoops through the yard on an urgent mission
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A fixture to hold the platters firmly, but gently, in the proper position
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Stainless steel socket head and button head screws add a certain techie charm