Hey,

You will need: 2 Big Gear 1 2 Big Gear 2 2 Small Gear 3 2 Small gear 4 1 Heart 8 connectors (try the file named "connector" first)

There is also a File named All that has everything you need on it.

Print settings: I used a brim, but you can get away without one if you like to life risky.

Assembly: Watch this Video: https://youtu.be/btxHkHjIkWg

Troubleshooting: The pins Break: Try scaling them. I did include a couple of different versions. Try them all. You can also try printing them with another spool of filament. Maybe even another Material. As a last resort, scale the Connector in your slicer untill it fits your needs.