First contribution - I have some issue with uploads.
I needed a drain adapter larger than a garden hose - which you can typically find.
I started with scotthraban model Rigid Shop Vac Drain Cap by scotthraban - Thingiverse.
Then modified it in Bambu Studio using primitives - my first attempt.
The prototype print got a little "fuzzy" around the transition - I blame that on cheap filament.
Printed on Bambu Labs X1E.
The author remixed this model.
I added a 2" extension to emulate 2" PVC for easy coupling.