What to use to clean the prop?? - SailNet Community
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post #1 of 38 Old 05-24-2007 Thread Starter
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What to use to clean the prop??

My prop looks like ****.

The Saildrive zinc is gone, and the prop zing is half there. New ones being installed. No problem.

Normally I have Yanmar and the yard do the service, but this time, I want to get my hands dirty and take it home and clean the prop myself.

What can I use to clean the prop? Copper brush and sandpaper? Can I use a rotary stell wheel?? Like the ones to polish Stainless or will it cause some weird electrical effect and corrode the porp?

I want to do it myself.

Here is my **** looking prop.



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post #2 of 38 Old 05-25-2007
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I'd recommend using an oxy-acetylene torch to clean the growth off your prop. It will certainly get rid of all the biologicals from the prop...

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post #3 of 38 Old 05-25-2007
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G - First I would say just to call the regular guys and ask them what they use, they should be willing to share. What is your prop made of? Looks like you have a soft metal, brass, bronze(my guess), nickel? I am not an expert about props. But i do know that you want something that is slightly abrasive, but not too much harder than the metal you are cleaning. You wouldn't want to use a steal grinding wheel on brass, it will just eat away the metal. Also, be careful with heat, as you can weaken the metal. I have heard of using a BBQ/Grill brick. It is made of pumice stone and is abrasive, but gentle enough on soft metal. I would scrape first with a paint scraper, then use the BBQ brick, then polish with a copper wire pad. Anyway, someone here will have the right answer(fstbttms?). For your use, smoooooooooth is the best.

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Last edited by bestfriend; 05-25-2007 at 02:41 AM.
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post #4 of 38 Old 05-25-2007
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Quote:
Originally Posted by bestfriend
Anyway, someone here will have the right answer(fstbttms?).
A wire wheel on a drill will do the trick. Then a buffer wheel if you wanna make it shine. It'll look nice underwater for about a month.
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post #5 of 38 Old 05-25-2007
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First I scrape off the large growth with a scraper being careful not to dig into the prop. Then, I use emery cloth, which is basically sandpaper but instead of the sand being on paper it is on cloth. I start with 150 grit and then move up to 220 grit. I have a bronze prop and it brings back the shine. I then spray multiple layers of clear antifouling paint on it.

My boat comes out every winter and although its only in the water for a six month season, I still get some barnicle growth every year.

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post #6 of 38 Old 05-25-2007
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Quote:
Originally Posted by bestfriend
G - First I would say just to call the regular guys and ask them what they use, they should be willing to share. What is your prop made of? Looks like you have a soft metal, brass, bronze(my guess), nickel? I am not an expert about props. But i do know that you want something that is slightly abrasive, but not too much harder than the metal you are cleaning. You wouldn't want to use a steal grinding wheel on brass, it will just eat away the metal. Also, be careful with heat, as you can weaken the metal. I have heard of using a BBQ/Grill brick. It is made of pumice stone and is abrasive, but gentle enough on soft metal. I would scrape first with a paint scraper, then use the BBQ brick, then polish with a copper wire pad. Anyway, someone here will have the right answer(fstbttms?). For your use, smoooooooooth is the best.
The bronze they use for props is not a particularly soft metal. The suggestion of the oxy-acetylene torch was a joke.

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post #7 of 38 Old 05-25-2007
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Use a brass brush in the drill if you are worried about rust from a steel brush.
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post #8 of 38 Old 05-25-2007
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Just go get a gallon of prop wash

Its the oldest trick in the boat yard

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post #9 of 38 Old 05-25-2007
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1. Get some stainless steel wool
2. Hold in left or right hand.
3. push hard against the prop.
4. Have someone start engine.

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post #10 of 38 Old 05-25-2007
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Quote:
Originally Posted by CalypsoP35
I then spray multiple layers of clear antifouling paint on it.
"Clear anti fouling paint"? That's a new one on me.
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