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Automatic Gear Box – Mechanical Surprise Box
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Automatic Gear Box – Mechanical Surprise BoxThis fully mechanical, gear-driven box was designed to combine visible mechanics with a playful surprise effect. The exposed gears drive an automatic lid-opening mechanism, allowing the functionality to remain clearly visible at all times. Inspired by classic mechanical curiosities, the model combines technical precision with a touch of nostalgic mechanical charm.All gears and mechanical components were specifically designed for this project and optimized for FDM 3D printing. PLA works particularly well for this model. Clearances have been carefully adjusted to ensure reliable and smooth mechanical movement — proper filament calibration helps achieve the best results.The assembly mainly uses standard M3 screws and nuts, making construction stable while remaining straightforward. Some screw connections should only be tightened lightly to ensure the gears can rotate freely. Certain parts can optionally be secured with a small amount of glue if
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