This is my Nuka Cola coaster based on my extruder visualizer version. It also consists out of two parts, the inner one with the label on it and the outer one that is just the ring so the whole thing looks like a bottle cap. I printed the outer ring with support but you could also flip the model and print it without.
Both parts also need to be clued together. There is a small notch inside of the ring to home the inner part. If you put some clue in the edges of that notch everything will fit and stick nicely.
Happy printing!
The author hasn't provided the model origin yet.