Cleaning anodized aluminum porthole frames - SailNet Community

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Old 02-07-2009
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Cleaning anodized aluminum porthole frames

Anyone got a good way of cleaning anodized aluminum porthole frames to bring back the new look? Or has anyone de-anodized them back to shiny aluminum, if so how did it come out looking?
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Old 02-12-2009
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Obviously you will have to remove the frames to do the job properly. Sodium hydroxide will remove anodization. Just for general information, most oven cleaners are simply jelled sodium hydroxide dispensed as a foam from the can, thus the dire warnings written on the cans. Remove the coating and have the frames clear anodized, paint them or if you want really shiny frames have them plated. You'll be polishing porthole frames for the rest of your life if you don't recoat them.
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Old 02-12-2009
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Quote:
Originally Posted by saurav16 View Post
Anyone got a good way of cleaning anodized aluminum porthole frames to bring back the new look? Or has anyone de-anodized them back to shiny aluminum, if so how did it come out looking?
I have re-anodized all the ones in my boat. I had to strip all the hardware to get ready to prep. Remove the anodize using sodium hydroxide and then buff out any discoloration using finer grades of scotchbrite. Anodize will not cover any blemishes. I then sent all the frames to an industrial anodizing company for anodizing. I would give you the name, but I was not pleased with their service and would not recommend them to anyone, but the results were good. It was a customer service issue only. Anyway, the frames did not look brand new, but not far from it and they were in pretty poor shape when I started. It cost me ~$300 for the entire project, plus sealer to reinstall the frames. It made a tremendous difference in the appearance. The hardest part was getting the old stainless screws out of the aluminum frames. Good luck!!
DD
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Old 02-13-2009
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You may want to check with the anodizer before battling with any broken hardware. The anodizing process will remove ferrous items for you.
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