Hello guys! I have a simple question - most of tutorials are about fans or something like this, but what do i need to to in such situations:

1) pipe with extension at the end is rotated about a vertical axis (1 pic), do i need to make rotation region covering only the pipe walls (2nd pic) or the walls and empty center (3rd pic)?

2) basket with blades is rotated about a vertical axis (4 pic), do the rotation region need to cover only bottom and blades zone (5 pic) or to cover all "cylinder" around a model?

Thanks!