Origin

I got my hands on an old spacemouse which still worked but its rubber got sticky. This made it pretty much useless. Luckily you can replace it and I designed this model.

Two versions

I've uploaded it in two version, one regular in 1 part and one in 2 parts.
For the two parts one its great to print the outside in TPU and use the fuzzy setting to give it some texture. Afterwords you can just slide it on with a friction fit. Please let me know if its too loose then I'll upload another version.

Tipp

In case you didn't know, you can also remove the rubber from the original part using IPA. It works but doesn't look all that great.