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padlock with key spring lock mechanism
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the target was to design a padlock fully 3d printed with no other hardware.
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Model information
- Source
- Printables
- Category
- Tools
- License
- Standard Digital File License
I prefer to print such functional items with petg.
It is recommended not to scaled down this.
You can scaled up but not too much so the spring can work.
assembly instructions:

- place all the internal mechanism and the hook in the main body.
- drop some glue in the points intricated with blue arrows.
- attach the cover and wait for the glue to cure with maybe some weight over the padlock.
- have fun