Step 1: Tear Down
Pull the base from it and separate the top part with the logo
Step 2: Sanding
Start sanding the aluminum case. Start with ~600-750 grit sandpaper and work your way up to 2500 grit sandpaper.
Step 3: After the 2500 Grit
When you get done with the sanding you stop here or move to more Advanced polishing techniques.