This is another variation of the Gear Sphere Mechanism by me. It is actually a Rhombic Dodecahedron. I made this more out of mathematical curiosity. If you watch closely, you can see that it consists of a Cube and an Octahedron, which means it transforms into a compound. The Gear Cube does the same thing.
I did also make a motorized Desk Skulpture like this.

You will need

6 Big Gear 1
4 Small Gear 2
4 Small Gear 3
1 Heart
14 Connectors

You can also just print out the "All" file; it contains everything you need.

Print Settings

Use a brim if you like. I used one only for the gears.

Assembly

You can just watch this video: Watch the video
Push the connectors into the heart.
Then push the Big Gears onto the faces that have the number 1. Then push all Small Gears 2 onto the faces with the number 2. Same with Small Gear 3.
You then need to turn the gears until the edges align everywhere.

Troubleshooting

If your gears are too loose or too tight, watch this video: Watch the video

If your connectors break, try experimenting with how many walls you print. I usually print 2 walls, but try different amounts to see if it gets better.
You can also try to print them with another spool or even another plastic. PETG works quite well.

Technical Data

The Gear Star takes around 100g of filament and 5.5 hours to print.

The filament I used in the pictures is:
Protopasta Forest Fantasy Green.