Parametric Snap-On Knob for Shafts with Flats
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
- Replaces lost or broken knobs on consumer electronics and DIY projects
- Snap-on design with internal stress-relief slot for easy installation
- Fits shafts with a flat side, no tools or adhesive needed
- Fully parametric OpenSCAD design for custom sizing if needed
Lost the knob on your stereo, amp, or mystery gadget? We've all been there. This parametric snap-on knob is the perfect fix for consumer electronics and 3D printed workshop tools alike, a simple, clever replacement that fits shafts with a flat side.
The design features an internal stress-relieving slot that flexes as you push the knob onto the shaft, making installation smooth and secure without cracking. No glue, no screws, just a satisfying snap into place.
Originally created to replace a random knob that wandered off into the void, this little problem-solver has helped countless makers get their gear back in action. If you need a different size, the OpenSCAD source is fully parametric and ready to customize.
3.1k 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 We have not load tested this design, so we do not publish a weight rating.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 alasdair53. We did not draw it.
Shared under GNU LGPL. See the original design