This is a well-known 3D-printed Fidget Toy. I don't know where it originated (please let me know if you do). I did make a few Variations on this. Like the Twisty Grid.

It's a print in place. No Assembly required.

Print settings:
Standard. No support. It might print better in smooth Filament.

Troubleshooting:
If this sticks together, you can try scaling it up. That also increases the tolerances.

Technical Data:
The Flexi Grid takes, around 140g of Filament and 10 hours to print. This estimate is for the smal version.