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post #1 of 7 Old 05-20-2007 Thread Starter
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What is the best way to remove barnacles from a bronze prop and what is the best way to keep barnacles from attaching themselves in the future?

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post #2 of 7 Old 05-21-2007
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A small scraper will knock the barnies off your prop. Only sandpaper or a grinder will remover their "holdfasts" (the white, calcarous discs left behind.)

As far as keeping your running gear clean in the future goes, I have yet to actually see this stuff in action, but "PropSpeed' is supposed to be da bomb.

West Marine: PropSpeed Product Display
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post #3 of 7 Old 05-21-2007
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PropSpeed is awefully expensive - about the same price as a new prop. I've read that lanolin works quite well but I have no indication how long it lasts.
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post #4 of 7 Old 05-21-2007
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Saaw a blurb in Canadian Yachting magazine about something called "Maxwax". They have a website Corrosion Technologies Corporation The blurb says that it was developed as a
"corrosion inhibitor but recently boaters in New Zealand are having excellent results using MaxWax as a marine growth inhibitor. The coating is flexible, won't crack or lose its resiliency and marine growth just can't gain a foothold. It is non-toxic and biodegradable."
Have never seen or used it personally, so can't vouch but it may be something to investigate further.
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post #5 of 7 Old 05-21-2007
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Thumbs up 1792 Zinc Coat Barnacle Barrier from Petit...

From Petit...using it this year for the first time, so far (2 months) so good.

Pettit Marine Paints - Browse Catalog


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post #6 of 7 Old 05-21-2007
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The story with the permanent marker goes this way - yards servicing props and writing pitch in marker noticed marine growth did not form where they wrote. I don't have any first hand info, but it is a cheap try assuming your boat is not in the water.
We use a painters scraper with different curves, but our favorite is a hard plastic kitchen spatula with round end. We use it on inflatable as well and it clean's em up quick and does not dig into fabric. If you winter haul, leave the holdfasts until spring - they dry out and pop off more easily.
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post #7 of 7 Old 05-21-2007 Thread Starter
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Thanks for the input. I've heard the marker trick.....I wonder.

Maybe I'll try that pettit marine product.

Thanks again.
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