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Removing Oxidation From Aluminum
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ContinuousWave Whaler Moderated Discussion Areas
ContinuousWave: Whaler Repairs/Mods
Removing Oxidation From Aluminum
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| Author | Topic: Removing Oxidation From Aluminum |
| Jefecinco |
posted 09-24-2013 07:22 PM ET (US)  
I have an aluminum pedestal seat mount casting that has a lot of oxidation in some fairly deep crevices. I would like to remove all the oxidation and paint the mount. I prefer an easy chemical method rather than a mechanical method due to the shape of the casting. I've tried applying some Starbright Hull cleaner which contains oxalic acid as the primary cleaning ingredient. It helped a bit but much oxidation remains. Your recommendation of a safe chemical cleaning method would be appreciated. Thanks. Butch |
| Chuck Tribolet |
posted 09-24-2013 11:35 PM ET (US)
A phosphoric acid based tile cleaner. EdFred is one brand. CLR might work too but it's different acid. Chuck |
| 69wailer |
posted 09-27-2013 10:29 AM ET (US)
Kerosene or Diesel fuel with bronze wool ( like steel wool) Wear rubber gloves. |
| dbrown |
posted 09-27-2013 11:47 AM ET (US)
Muriatic acid will take it off pronto, but be cautious. Wear old clothes, rubber gloves and a mask. |
| Jefecinco |
posted 09-27-2013 07:54 PM ET (US)
Thanks guys. Mur1atic acid looks attractive. What are some sources for the acid? Butch |
| dbrown |
posted 09-27-2013 11:29 PM ET (US)
Lowes, Home Depot and most local hardware stores carry muriatic acid. |
| Chuck Tribolet |
posted 09-28-2013 01:52 PM ET (US)
Muriatic acid is sold anywhere swimming pool supplies are sold. It's hard to find in anything less than 1-gallon jugs, and often only in a box with two 1-gallon jugs. My local Ace hardware has quarts. It's hydrochloric acid, VERY potent stuff. I'd cut it about 10:1 with water. ADD THE ACID TO THE WATER, not the other way round. And I think it's overkill. The EdFred phosphoric acid tile
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| Jefecinco |
posted 09-28-2013 07:03 PM ET (US)
Thanks Chuck. I'll look around for the EdFred. I'll give it a try first if I can find it. Butch |
| tmann45 |
posted 09-28-2013 09:36 PM ET (US)
Butch, Henkel, the maker of Loctite products makes two different products specifically for aluminum corrosion removal. Loctite Aluminum Jelly (Aluminum Cleaner & Brightener) and DURO Aluminum Jelly (Aluminum Cleaner & Brightener) I have not used either one but I would recommend these if you can't find the EdFred that Chuck mentioned before the muriatic acid. Muriatic will attack the good aluminum with a very strong reaction. |
| Chuck Tribolet |
posted 09-30-2013 11:12 PM ET (US)
I found the MSDS for the Loctite Aluminum Jelly, and the active ingredient is Phosphoric Acid, which is the same thing that's the active ingredient in EdFred and Naval Jelly. There were three other ingredients, which I think are the jelly part. I think the Aluminum Jelly might be a good choice if the parts BTW, Coca-Cola contains a small amount of Phosphoric Acid
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