The tolerance isn't perfect, currently it is a tight fit but if your printer is calibrated well it should work. Scaling up should help, I designed it small to be a quick and cheap print. If you need a higher tolerance let me know and I can upload a modified file.
This is an original design I made in Fusion 360. Each piece is about 1 gram of filament, and should take less than 10 minutes to print per tile. I recommend duplicating the file in your slicer, I printed 6 at once in under an hour.
My settings (Cura):
0.2mm layer height
5% cubic infill
If you like this, feel free to check out my other tessellation models!
https://www.printables.com/model/353444-wave-tessellation
https://www.printables.com/model/352868-random-spiral-tessellation
The author marked this model as their own original creation.