Started Sanding Inner Dome

Oh boy, here we go. Each R&J dome owner gets to go through a rite of passage, sanding the outer surface of the inner dome, until it fits flush against the inside surface of the outer dome. Well, I sanded and sanded and sanded some more for several hours today, and although I think I managed to sand off a fair amount of surface, I still have a long way to go (millimeters, but still...) before the tops of the two layers meet up. I mostly sanded by hand using 60 grit sand paper, but I also used a random orbital sander for a few minutes. Tomorrow I may go back to the sander for a while. I have no idea how many days I'll be sanding...