What grades of wet n dry did you work through? Did do it wet or dry?
I used at first 600 grade paper to remove the anodising.
when I was happy with it, it was onto 800 grade.
when happy again. Onto 1000 grade to flatten out the surface and remove the scratch's out the alloy.
Then used 1200 grade to smooth the surface.
Then onto 2000 grade to have a super smooth surface.
Then gave the alloy a real good buffing by the use of Brasso and some good old thick socks
Used the paper in wet form and soaked for at least 10 minutes before use.
Every grade I used fresh clean warm soapy water and constantly cleaning the paper to ensure free of any bits.
Doing it this way ensures a super smooth chrome like quality finish.
I hate RED DWARF