Fidget Twister Remix

This remix
- Centers the hole in the rod, so the endcap is centered when assembled.
- Slightly increases the hole size, to avoid breaking the end cap while trying to force it in. (Edited to add: My particular printer/filament combo may have needed a larger hole here than others. Still figuring out the right horizontal-expansion settings for me. If it doesn't fit snugly, use a tiny bit of super glue.)
- Scales the ring down slightly as suggested by some commenters on the original design.

Printing notes:
- 0.2mm layer height
- I printed the cap with 1.2mm thick walls, top, and bottom
- Your usual settings for standard quality should work well