Ok, so I bought some aluminum polish and started on a small area on the back side of the case. This is what it looks like after an hour of polishing on this one small spot.





I've rubbed my finger nearly off. QUESTION: If I want more of a mirror-like quality finish, does the sanding process include wet-sanding with 1000, 1500, and 2000 grit? Or can I simply dry sand with the same grits?