rivet
thingiverse
This proof-of-concept demonstrates a male and female rivet design that, when assembled using pliers, are irreversible - meaning they cannot be separated once joined.
Download Model from thingiverse
With this file you will be able to print rivet with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on rivet.