IMPORTANT: Do not scale the object or it will be too thin and brake.

The gyro designs I saw on the internet were too heavy looking and used a lot of material, so I set out to make one that looked elegant and thin. It had it´s challenges, but after 5 prototypes and a lot of PLA, I arrived at Gyro Air. I don't like supports, so I made every form nice and round. The nipples that worked best are derived from the parametric gyro cube from smorloc

By popular demand I have uploaded a smaller version. https://youtu.be/dMZzUBG6w0s

By popular demand I have uploaded the model in two sizes: 10cm and 7cm. The big one has 5 spheres and the small one has 4.

No supporting structure needed.
For better results I recommend printing the Gyro Air at it's original size. Printing it too small will make the circles too thin and it might break.

I printed the final object with a 0.25mm layer size.
Once printed snap the conical nipples into place beginning from the smallest working your way up to the biggest.
You can add a drop of oil to the joints so the spheres rotate freely.