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PostPosted: Sun May 11, 2014 12:52 am 
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Joined: Sat Nov 05, 2011 1:58 am
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Location: Forster, NSW, Australia
I foolishly placed a cast iron hotplate in the vacant seat on my TI a while ago during an offshore trip, and (of course) the salt water caused a nasty rust stain.

I called into my local boat dealer and declined the option of buying a huge bottle of rust remover ($55!), and went on the net in seacrh of a cheaper solution.

It turns out that if you buy some baking powder and mix in some vinegar to make a frothy paste, and spread this over the stain, bingo! the stain (mostly) goes away. Well it did on my dune TI, but I suspect it would also work just as well on the other colours.

Not bad for at least $50 less!

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2012 Tandem Island "SIC EM"
www.scenefromabove.com.au


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PostPosted: Sun May 11, 2014 1:21 am 
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Location: Kailua 96734
Hmm. Wonder if it works on sails,.. :?:


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PostPosted: Sun May 11, 2014 2:58 am 
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Location: Forster, NSW, Australia
NOHUHU wrote:
Hmm. Wonder if it works on sails,.. :?:

You got me Googling...

from Sailnet.com
Quote:
Rust Rust can be removed with a thin paste of baking soda or toothpaste and a soft-bristled toothbrush. Wash the area well with mild detergent and rinse thoroughly. This will not remove any stain embedded in the coating, but it will remove most of the surface stain. Remember, that using any abrasive on a sail reduces its life. For removing small areas of rust stain, a mild gel product named Magica is recommended.


from cruisersforum.com
Quote:
Actually, any type of acid will dissolve rust including lemon juice. Most sails made of Dacron or Polyester are resistant to acids. The lighter acids take longer but still work. And washing the treated area with plenty of fresh water is important so as not to affect other items like sail covers.

I have used nitric acid which takes it out in seconds but one must know the precautionary measures. Carpet cleaning supplies carry a small bottle of Rust Remover that works real good. But Rubber gloves and safety glasses are a must when using any toxic chemicals.


and from hobiecat.com (really!
Quote:
I would use a solution of oxalic acid.
Bar Keepers Friend contain it with other ingredients but I would try it alone for a really tough rust stain.
It is a reducing agent and also works by chelating the iron.
It shouldn't affect a dacron sail.
Be aware of its toxic properties though.
You can buy it on eBay.


I personally would try vinegar and baking soda first, in a small area, and go from there. Photos would be nice, I forgot mine!

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Tony Stott
2012 Tandem Island "SIC EM"
www.scenefromabove.com.au


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