I got inspired at the office of course to bind some papers together without using hard folders. I saw one similar product and well I did my printable version for all of you! The model is designed in Fusion360.

The print is very fast and easy. No supports needed and it takes on my MK4 half an hour to print with 0,4mm nozzle and 0,2mm layer height. Check the position of the model in print file. 

I just tried this first print on some papers and it worked well. Connections are tight but I think its better to use less rigid and more elastic material that can be banded easily. See on the photos that it starts to crack. 

STEP file is included in case someone need to have bigger tolerances or just wanna remix it.

I hope to see many bonded papers in comments!!!