We printed 3 shells and 100% infill. I'm sure it can work other ways but I wanted to be as sure as possible that there would be no leaks that would cause the pressure to drop or create turbulence in the wrong places. Earlyer designs did have issues with leaking. You have to blow it pretty hard and in future iterations I will keep working to make it easyer. If you are willing I would recommend trying those settings.
Let me know how it goes or if I can be any more help.