Found 2 3D-models for “circular staircase” across many websites

#spiral staircase#staircase#fidget#circular staircase#puzzle#openscad#Fidget Toy#puck#impossible#stairs
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ESCALERA CARACOL

ESCALERA CARACOL

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Staircase Puzzle Fidget Puck

Staircase Puzzle Fidget Puck

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