CR-10 S4 40mm ball feet.

thingiverse

I designed these feet because existing models online required additional screws. My versions are engineered to simply snap onto the bottom and utilize the single screw that retains the original feet in place. They provide a snug fit, but will mount if enough pressure is applied. I recommend printing one initially to gauge its suitability for your needs. Admittedly, I was slightly too precise with the tolerances, yet managed to secure mine without major issues. They hold firmly even without the central screw. If you appreciate these designs, please let me know! I'm always eager to receive feedback, which helps me refine my 3D printing skills. Thanks for your time.