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Working Micro Gear Heart Keychain

Working Micro Gear Heart Keychain, design preview, turn three quarter

Design preview. Rendered from the file, not a photo.

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What it does

  • Functional rotating gears in a heart shape, actually spins
  • Easy assembly with new fixed PLA pins; no glue needed
  • Compact keychain size perfect for daily carry or gifts
  • Engaging fidget toy that combines mechanics and design

This working micro gear heart keychain merges engineering with sentiment. The heart-shaped design features interlocking gears that genuinely rotate, making it both a functional fidget toy and a conversation-starting accessory.

Designed for easy printing and assembly, the gears are held together with dedicated PLA pins that slot securely into place, no adhesives required. Once assembled, simply attach to your keys and enjoy the satisfying mechanical motion.

Perfect as a Valentine's Day gift, a unique stocking stuffer, or a personal keepsake that celebrates the intersection of art and mechanics.

16k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What you get

  • This design prints as one piece.
  • Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PLA. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.

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Who made this design

Designed by crkoolkid. We did not draw it.

Shared under Creative Commons, credit and share alike. See the original design