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 Removing bottom paint		  New Topic  Topic Locked
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Gary B.
Admiral

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USA
969 Posts
Initially Posted - 04/26/2003 :  03:02:30  Show Profile
Friends: I promised to get back on when I found the answer to removing the old ablative copolymer bottom paint to get down to gelcoat. After a brief stab at sanding, scraping, powerwashing up close, as well as a brush and water, I was ready to try sandblasting with walnut shells (or was it baking soda)?

Anyway, I went to an auto paint supply house and bought a gallon of Cap't Lee's Auto Stripper (approx. $30), which is okay on fiberglass. Water sprayed on will neutralize it. It sprays on with a hand squeezed spray bottle, sticks to the surface and doesn't run. After about 10 minutes, a broad putty knife will peel it all off down to gelcoat. Then, I used scotch bright pad and water to neutralize it all. The peeled off chunks fell onto a tarp. After a couple of days, when it dries, you can shake the residue into a garbage can. I am not quite done yet because the weather took a turn for the colder. I learned from experience that this stuff doesn't work well at less than about 50-60 degrees.

Trust me, this stuff is good. It took longer to mask off the trailer and the hull than it has taken to strip the bottom. I am a little over 1/2 done in about 4 hours or so? Waiting for the weather to warm a bit so I can finish. I am very satisfied with this stripper, and very glad that I don't have red dust everywhere. A very light sanding with 80 grit and it will be ready to paint.

Relieved,

Gary B.
Encore! #685 SK/SR
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Steve Milby
Past Commodore

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USA
5908 Posts
Response Posted - 04/26/2003 :  09:43:20  Show Profile
Speaking as one who just started scraping his hull, and is already discouraged, God bless you for sharing this tip! I'm going out today to hunt for the stuff. Did you, by any chance, buy it from a nationwide chainstore?

Steve Milby "Captiva Wind" C-25 T/FK #2554
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Gary B.
Admiral

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USA
969 Posts
Response Posted - 04/26/2003 :  12:07:11  Show Profile
Yo, Steve, glad I could add something to the forum. You recently sent me your racing tactics paper which I have read; thank YOU for sharing.

As for your question, I am not sure. I bought Capt'n Lee's Auto Stripper at Industrial Finishes, Inc. I know they have several locations in Portland, OR, and at least one in Vancouver, WA, but I have no idea if it's national or not. I suggest you try Auto Paint Suppliers in the Yellow Pages, or perhaps a Google Search. I may spend a few minutes myself in research. I'll get back on if I find something. I forget where you are located.

Gary B.
Encore! #685 SK/SR
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Douglas
Master Marine Consultant

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1595 Posts
Response Posted - 04/26/2003 :  17:15:11  Show Profile  Visit Douglas's Homepage
Thanks for the post on that topic. Many of the people here on the board have been looking for the easy way out. I must admit it sounds good. Any info on enviroment friendly or not. Many yards wont alow chemical stripers.

Doug&Ruth
Triska (Alberg 29)
Tacoma Wa.
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Steve Milby
Past Commodore

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USA
5908 Posts
Response Posted - 04/27/2003 :  10:28:05  Show Profile
Gary, is Capt. Lee’s Auto Stripper a methylene chloride paint stripper? I have found a couple paint strippers of other brands that are based on methylene chloride, and that are sprayed on with a hand squeezed spray bottle. It sounds very similar, but old Capt. Lee might have added a secret ingredient that makes old paint leap off the hull.

Steve Milby "Captiva Wind" C-25 T/FK #2554
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Gary B.
Admiral

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USA
969 Posts
Response Posted - 04/27/2003 :  22:43:15  Show Profile
Steve: The can says: methaline chloride, methanol, toluene, ethyl alcohol (and some sort of secret stuff <img src=icon_smile_wink.gif border=0 align=middle>, maybe that isn't listed). BTW: I spent about 2 1/2 hours this afternoon on it and finished her up except the spots under the rollers. It was a much warmer today. One of the tricks is getting it thick enough to penetrate several layers. The stern of my boat had thicker paint than the bow which went SO easily. I had to do a quick second coat in a few places. But, still, I would MUCH rather do it this way than sand or scrape! I am just starting my second gallon, FYI. I think one gallon would only do it if it was really warm???, or if the paint was only 1 or 2 layers thick perhaps....I need to jack up the boat, treat the roller places, give her a very quick sand, and paint. BTW: I have only use foam rollers when painting one part topside enamel. I usually use short napped regular rollers, but someone recently told me I should use foam for bottom paint. Any thoughts on that?

Gary B.
Encore! #685 SK/SR

BTW: Watched a C22 guy drive his boat on a trailer with rig up under a powerline this afternoon. Sparks, bent mast, hung up in lines for awhile....ugly. Glad it wasn't me. That's two I have seen do that now, but the first one was with trees.....Be careful out there!
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.