I absolutely love this (derived) project. It was very well done and thorough in the amount of design choices so kudos to philbarrenger! I made two of my favorite caps for my PS4 controller but then thought, "what about my Xbox 360 controller?" (I use it avidly with my PC). The diameter of the PS4 analog stick tops are 0.7" but the Xbox 360's is 0.73" and didn't want to overstretch the PS4 ones and possibly damage the rubber coating on the sticks so I remixed my two favorites for the bigger diameter. At the moment I only did my favorites but if given enough requests I can do some of the others.Designed to be made with TPU semi-flexible filament (or even TPE). The FreeCAD v0.16 source files are included for adjustments. If you make these please post pictures in the "I Made One" section :) . Item of note, the wide cap doesn't hit the "X" button but can get in the way. If I improve this design I'll add it here.