Re: [Amel Yacht Owners] Sandblasting Good or Bad?(to remove Antifouling to Gellcoat)

Patrick McAneny

Ann -Sofie , Thanks for the feedback , chemical stripping does not seem to be the way , too messy . Diane just told me that today is your birthday , and that she sent you wishes thru facebook , so let me add my wishes for a Happy Birthday ! We hope to see you guys again someday.
Pat & Diane,
SM Shenanigans

-----Original Message-----
From: Ann-Sofie Svanberg kanalmamman@... [amelyachtowners]
To: Patrick Mcaneny sailw32@... [amelyachtowners]
Sent: Mon, Jan 16, 2017 9:27 am
Subject: SV: [Amel Yacht Owners] Sandblasting Good or Bad?(to remove Antifouling to Gellcoat)

We used a paint remover in 2013, it didn’t save any time maybe some effort. But it was a really relly messy job that we don’t recomend anyone to do. You have to have wear a full Water proof protection to not be hurt, you have to use tons of Water to washit away with, not only from the hull but even from the ground as the solutions is high corrosive. It you don’t wash the ground properly dogs or cats or other animal can get their pawn really bad damaged. We didn’t have this full body waterproof coverage and got some nasty burns where the raincoat didn’t cover.
Also you have to have the right temperature. If it is to hot the solution dries out and do the work. We hade to cover with adhesive plastic film to keep the moisture. As I said really really messy.
We had the work re-done in Trinidad, scraped down to the gelcoat and then new paint. I belive that we paid about 2500 USD for it. And it was done manualy.
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Ämne: Re: [Amel Yacht Owners] Sandblasting Good or Bad?(to remove Antifouling to Gellcoat)
I have been thinking I would like to get rid of all the layers of bottom paint. I was wondering about chemical stripers , if they work and how well. Seems like you may run the risk of scratching the gel coat scraping , is that a concern and how wide of a scraper would you use. I got a quote of almost $3000. to sandblast, more than I expected , being a one day job , but if it saves ten days of scraping ... Just wondering what others have done. Also wondering how one deals with the bottom of the keel only a couple of inches off the ground and resting on blocking.
Pat SM#123

-----Original Message-----
From: James Alton lokiyawl2@... [amelyachtowners] <amelyachtowners@...>
To: amelyachtowners <amelyachtowners@...>
Sent: Sun, Jan 15, 2017 8:16 pm
Subject: Re: [Amel Yacht Owners] Sandblasting Good or Bad?(to remove Antifouling to Gellcoat)

I have always avoided the chemical strippers myself due to concerns of short and long term damage to the gel coat.  The stuff goes into any cracks in the gel coat and can get into the laminate and or into any voids under the gel coat which is not a good thing.   The suggestion that was made to use a good sharp scrapper is IMO a good way to go,  just take your time.  As was also suggested, go with the carbide blades.  The Bahco 660 or 665 scrapper works well for me,  you can find these on Amazon.  You can also sand it off with a dustless system or use this as a follow up to the scrapping.  Definitely avoid using a heat gun as it is just too easy to craze the gel coat. 

Best of luck,

James Alton
SV Sueno,  Maramu #220
Sardinia,  Italy

On Jan 15, 2017, at 1:11 PM, santorinlo18@... [amelyachtowners] <amelyachtowners@...> wrote:

Hi Forum, Just about to scrap bottom - is sand blasting good method? seen the end result - looks neat but rough compare to manual. Not sure if good or bad, however, about 50% cost compare to manual + chemical. Any experiences or view

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