Geneva Mechanism Keychain

thingiverse

This unique take on my everyday keychain features rotating gears that add an element of fascination to its compact size, measuring approximately 6 centimeters in length. Three custom holders were designed, each having varying tolerances between the shaft diameters and hole sizes in the wheels, allowing for precision adjustment. **Step-by-Step Assembly Instructions** To bring this intricately designed keychain to life: 1. **Print Components**: First, print the Geneva wheel and pinwheel, taking care to capture every intricate detail. 2. **Parallel Printing**: Simultaneously print the holder and dummy piece. 3. **Printer Pause**: Halt your 3D printer as the printhead reaches the dummy location just before it is about to start building the bridge structure of the holder. This step ensures smooth continuation. 4. **Wheel Placement**: Position the wheels in their designated areas, ensuring there's enough space for both pieces to fit without issues. 5. **Continuation Print**: Once all wheels are in place, proceed with printing your keychain. 6. **Completion**: Upon completion, remove your finished product from the printer, ready to use and appreciate. (Notes: This keychain was successfully printed on a Prusa i3 3D printer using 0.2mm layer height and a nozzle size of 0.5mm with slicer software slic3r.)