Biohazard Coasters — raised trefoil that lets go of a wet glass, plus caddy

Ø90 mm drink coasters carrying the biohazard trefoil — and the trefoil is what the glass stands on. It is raised **0.8 mm above the well floor**, so a cold, wet glass rests on three lobes with open air between them and never suctions to the coaster. The mark still sits 0.4 mm below the rim, so the coasters nest on the rim and the ink never touches the one above it. Four coasters stack into a drum caddy with a thumb scoop. ![the printed set](https://media.printables.com/media/prints/e4949408-991…

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