For your inspiration I'm submitting a photo of an MCS 110/130 bcd chainring I just completed this weekend. I used oven cleaner to remove the blue ano on the front side of it. Started with 120 grit sandpaper to remove the scratched parts and worked my way up to 2000 grit. (wet-sanding starting at 320 grit on up). Hand polished with Mothers Aluminum polish and finished off with Turtle wax.

Just got a call from NASA about it and they want to use it for their Kepler Space Telescope. That was a joke!