Planetary Gearset Retractable Keychain Model 2
cults3d
A portable keychain/badge holder with moving planetary gears that retract.\n\nThis design is a variation of my previous model, featuring a sleeker look, significantly smaller size, lighter weight, and easier assembly process.\n\nFull preview available upon request.\n\nAdditional non-printed components required:\n- A clockwork spring approximately 3-4mm wide (can be sourced from a cheap mass-produced retractable keychain/badge holder)\n- A nylon string measuring about 1 meter in length\n- Six m2x12 screws\n- Four m2.5x8 countersunk brass screws\n\nTo purchase one already printed, assembled, and tested, please visit etsy.com at the specified link.
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