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fidget spinner - long spinning
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3D-printed fidget spinner featuring a compact, gear-driven mechanism with one central sun gear and three planet gears. The design eliminates traditional bearings for easier build. Suitable for demonstration of gear interactions, mechanical design projects, or as a functional example of additive manufacturing precision. Assembly: FIrst arrange the gears like on the photo then push them in with some force. If you want to you can use some silicon grease for longer spin.
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