A very simple printable paperclip based on the timeless Gem design introduced at least as far back as the 1890's. It still works great!

This download includes 3 thicknesses of a large paper clip. The thin version makes a great little bookmark while the thick version is better at holding paper sheets together. I suggest printing solid at 0.16mm layer height and 1 outer wall/perimeter at the original scale, but you can also scale up or down as desired (comically large paperclips, anyone???)

Photographed models were printed on the Bambu Lab X1-Carbon 3D Printer using Bambu Lab PETG (red) PLA-CF(black) and Silk PLA(gold) filaments.* *These affiliate links give me a commission on sales at no additional cost to you. Thanks for supporting Make Anything!