Yeah I read this https://www.gbryant.co.uk/posts/2021-02-15_ploopy-trackball/post.html Once I have a 3D printer I’ll try building one. First without electronics to see if I like the haptic. Then I could add more buttons to that too or combine it with a 3D printed case for an ergo split keyboard.

I feel like any sticktion at all would be distracting me and ruining any chance to make very precise movements. So I don’t want to buy any more trackballs for now.