Parametric twist and lock coupling

Parametric Twist & Lock Coupling – customizable snap-fit connection

This fully parametric "twist and lock" coupling lets you securely connect two parts with a simple twist – no tools required. Designed for easy customization, you can adjust the diameter, height, and tolerances to fit your needs, whether you're using FDM or resin printers.

 Applications:
Perfect for a variety of DIY and organizational projects:
– locking lids for containers and boxes,
– modular workshop organizers,
– kitchen storage jars,
– quick-attach mounts,
– or as a reusable fastening system for larger assemblies.

 Customization:
Easily adjustable via parameters (e.g., in Fusion 360 or OpenSCAD). You can modify the bayonet diameter, locking depth, or number of locking tabs to suit your specific application.

 Print-friendly:
Optimized for 3D printing – no supports required, quick print time, and smooth locking action even with a standard 0.2 mm layer height.

How to use:

1. Print both male and female parts with the same parameters.
2. Align the coupling tabs and insert.
3. Twist to lock – you’ll feel a slight resistance as the locking tabs engage.
4. To unlock, twist in the opposite direction and pull gently.