M12 TH8A TactMod+
thingiverse
TH8A TactMod+ by @zhutwo, with holes for M12 ball plungers. I was not able to find M12 nylon-ball plungers shorter than 20mm, which required a slight modification to the casing, but this provides the best tactile "bump."
Download Model from thingiverse
With this file you will be able to print M12 TH8A TactMod+ 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 M12 TH8A TactMod+.