Geocaching PETLock for PET preforms (PETling)
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A simple locking mechanism to secure your PET preform with a regular padlock
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Updated at source:
Model information
- Source
- Printables
- Category
- Other Toys & Games
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
This locking mechnism allows you to secure your PET preform using a padlock.
Good for multi-staged caches or lockpicking caches.
You will need 1 M4x30 bolt and 1 M4 nut for assembly.
Legal notice:
The geocaching logo used in this model is a registered trademark of Groundpeak Inc.
When using this model, please make sure to read and adhere to their Logo Usage Guidelines
Update 2025-08-24: Added Version 2 with a horizontal lock possibility. Also available with or without logo
Printing instructions:
- Print each part once, placed on one of the rounded sides
- Supports will be needed in any case
- I'd recommend printing this in PETG / ABS or some other more durable material, especially if it's going to be exposed to the weather
Assembly instructions:
After printing, make sure to remove any left over support. Fit the two parts together, enter the screw (you might need to widen the holes on part 1 or add threads using an M4 cutter)
Insert the nut in the hexagon shaped hole at the bottom of part 1 (it's a tight press fit).
Enter the bolt. Don't pull it too tight, otherwise the two parts might not be moving.
Open and close the mechanism a couple of times to properly break it in.