PS4 Cap Extenders
thingiverse
I bought thumbstick extenders for my PS4 controller, but they kept falling off because they didn't have enough clips on the bottom. Modified the caps that Xtrudor posted to eliminate the solid ring at the bottom and added extenders with depressions for my thumbs. Mine are working just fine, I'm happy with how they turned out. Noticed that my original end result was actually taller than my old ones, so I made another set that was cut down a bit.
Download Model from thingiverse
With this file you will be able to print PS4 Cap Extenders 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 PS4 Cap Extenders.