This case for the Launchpad by SpaceCat designs was created with heavy influence by the Reddit user /u/SlimSisko. His design dimensions did not come out for me right, so I designed one from scratch that looked a lot like it.
My only full print with it was a tad too long in internal diameter, so I cut a bit off. Hopefully it fits well. Let me know in the comments if you have any issues!
Update: I have now tested this version and it works great for me!
10% Cubic - Doesn't really matter
Rotate so the flat sides are down, no supports should be needed. Happy printing!