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Old 25-01-2013, 06:35   #1
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Getting Rust Stains out of Fiberglass

I have some rust that has leached onto the fiberglass from some of my stainless on the deck. Does anyone know of a product that will get the rust out?
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Old 25-01-2013, 06:42   #2
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Re: getting rust stains out of fiberglass

have you tried coca cola yet ? or barkeepers friend\?
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Old 25-01-2013, 06:51   #3
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pirate Re: getting rust stains out of fiberglass

Starbrite works okay...
But then so does a 50/50 mix of mild bleach and white vinegar... just stay upwind..
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Old 25-01-2013, 06:56   #4
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If you go to the HMP web site (just google it). He has a cleaner gel that is amazing. It takes rust stains out like nothing. We had a box of screws fall on the cockpit sole in a storm and had about 60 or so rust stains that looked like screws UGLEY.
You put this blue gel let it sit for 2 min brush lightly with a toothbrush rinse and its gone. I think it about $15 CAD. You only need a little bit and it lasts forever. I've had mine for about 10 years. IT'S THE BEST
I will be at the boat tomorrow and will get the name for you.
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Old 25-01-2013, 07:02   #5
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Re: getting rust stains out of fiberglass

As Zee has recommended Barkeepers Friend. It's oxalic acid in powder form, very economical, under two bucks at Walmart or Publix.
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Old 25-01-2013, 07:07   #6
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Re: getting rust stains out of fiberglass

and coca col a has phosphoric acid to keep your gutz clean from rust, also--good cleaning agent...
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Old 25-01-2013, 08:23   #7
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Re: getting rust stains out of fiberglass

Whink Rust Stain Remover, works like magic. Squirt it on and rust stains just disapear. It's available in grocery stores, hardware stores and good marine stores.
The active ingrediant is hydrofloric acid.
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Old 25-01-2013, 08:27   #8
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Mr. Clean magic eraser works great
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Old 25-01-2013, 08:34   #9
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Re: Getting Rust Stains out of Fiberglass

.....Hydrofloric, Phosphoric, Oxalic, Muratic......any of these. It's the "acid" low pH that does the trick. I rather use the Oxalic acid wash, but they're all pretty much the same.
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Old 25-01-2013, 08:40   #10
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Re: Getting Rust Stains out of Fiberglass

coca cola very easy to find in strange lands...even easier than boaty stuff....works great.
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Old 25-01-2013, 08:47   #11
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Re: Getting Rust Stains out of Fiberglass

Fresh squeezed Lemon juice........
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Old 25-01-2013, 09:13   #12
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Re: Getting Rust Stains out of Fiberglass

Coca Cola contains phosphoric acid and lemon juice has citric acid......all the acids do the job. I suppose the choice is to be made with what is less expensive, less harmful to the environment and less harmful to the boat yet strong enough to remove the rust.
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Old 25-01-2013, 09:41   #13
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Re: Getting Rust Stains out of Fiberglass

FSR worked for us when a nearby welder left tiny steel shavings all over our boat. It might be the same stuff as mentioned above but priced for marine use, but it worked for us.
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Old 25-01-2013, 09:43   #14
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Re: Getting Rust Stains out of Fiberglass

Ospho - works on everything.
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Old 25-01-2013, 12:18   #15
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Re: Getting Rust Stains out of Fiberglass

Good ol' Ospho. Great for general brightening up topside, too. Just spray it on, brush it around a little, let it stand, then hose/brush it off after a few hours. Repeat as necessary.
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