This is a spacer meant to be used to repair joy con drift using the method shown in this video:
https://www.youtube.com/watch?v=Vid8lIXmZwE
Instead of cutting cardboard and that imprecision, you can just print this spacer instead for that extra pro touch. I used double sided tape to hold the spacer in place as I reassemble the joycon. This is a VERY fast print, about 3 minutes. While this may not repair all joycon drift issues, it has certainly repaired mine, there is a test demonstrated in the video to see if this is the method that will work for you.
UPDATE: Reduced the thickness as some complained it was too thick for them. It is possible to dial this in by adjusting the z height if you find it too thin or if you want it to be thinner still. The current thickness is .6mm or 3 layers printed at .2mm layer height.
joycon_spacer_v2.stl | 13.2KB |