These polishing pads will get rid of the oxidation for you. On a 30 year old pontoon that I inherited. The boat had the worst scale and limescale deposits on a boat I have ever seen. But with 320 grit sandpaper on my random orbital sander. And with these airway polishing pads I was able to polish the aluminum up a bit. But these pads will turn black in no time as they absorb all that oxidation. Now you have to throw them away because there is nothing you can use to clean them. It was an expensive adventure.
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