Flexible Coupling - 3D Printed Workshop Tool

Design preview. Rendered from the file, not a photo.
This model is not currently offered as a verified ready to buy print.
What it does
- Printable without support material, ready to produce on demand
- Handles angular misalignment, offset shafts, and end float issues
- Provides soft-start damping between connected shafts
- Fully mechanical design for reliable shaft connections
This is a fully printable flexible coupling designed for workshop tools and mechanical assembly. It solves alignment challenges that rigid couplings cannot, accommodating angular misalignment, offset shafts, and vertical float while requiring no support material during printing.
The flexible design absorbs mechanical shock and provides a soft-start lag between connected shafts, reducing stress on motors and driven components. Ideal for DIY robotics, 3D printer upgrades, and custom machinery where precise alignment isn't always possible.
Print it as-is and use immediately. No post-processing or assembly jigs required.
14k 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 We have not load tested this design, so we do not publish a weight rating.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 Gyrobot. We did not draw it.
Shared under Creative Commons, credit and share alike. See the original design