Kubotan Keychain
thingiverse
So i tried to print a Kubotan i found on here, but the base of it sucked and didnt stick well enough to actually finish the print, so i designed my own (and made it a tiny bit less pointy while i was at it).
Download Model from thingiverse
With this file you will be able to print Kubotan Keychain 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 Kubotan Keychain.