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Unread 05-12-2013, 01:32 AM   #1
Coyotes97
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Paint/fiberglass/boat experts help!!

I know there are a lot of experts in a lot of things around here so I am really hoping you guys can help.

A buddy and I just picked up a fiberglass canoe for a song. The issue with it is that some idiot decided they needed to paint the canoe so they started rolling on grey primer with a paint roller.

They did no surface prep so the bottom of the canoe where it goes through the weeds and sand is now totally free of primer showing the yellow original gel coat in almost new condition! It looks great! We want the sides to look equally great so we would really like to get that nasty primer off.

We tried a plastic putty knife but the primer is on too good for that. Scotch brite appeared as though it would take many lifetimes.

I assume any sort of stripping agent would attack the gel coat underneath.

A wire wheel would obviously trash the surface underneath as well.

Our only remaining idea is to use fairly fine sand paper to work our way through the primer and go even finer as the yellow shows through. Obviously that would be time consuming but we will do that if it is the only way.

Any suggestions to help us restore this old canoe would be appreciated. We already have several expeditions planned for the old girl we have aptly named: Fat Guys in a Little Boat, as we both are carrying too many pounds. The canoe is supposed to help us change that.

Thanks in advance.

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Unread 05-12-2013, 02:56 AM   #2
Hoobly_Goob
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It's about two am, so the first thing I thought was that you should drag it through the sand and weeds upside down for a little while.
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Unread 05-12-2013, 07:18 AM   #3
zenman
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I've heard WD 40 might work but I've never tried it. Maybe try a small area first.
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Unread 05-12-2013, 08:35 AM   #4
91YJ4X4
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Quote:
Originally Posted by Hoobly_Goob
It's about two am, so the first thing I thought was that you should drag it through the sand and weeds upside down for a little while.
Haha I was thinking the same thing.
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Unread 05-12-2013, 11:18 AM   #5
Coyotes97
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Quote:
Originally Posted by Hoobly_Goob View Post
It's about two am, so the first thing I thought was that you should drag it through the sand and weeds upside down for a little while.
LOL!

I bet you think you are the first one to think of that but the order goes:
-Me
-My buddy
-My wife
-My buddy's wife
-You

You could be the first to figure out how to pull that off if you have any suggestions.
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Unread 05-12-2013, 11:19 AM   #6
Coyotes97
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Quote:
Originally Posted by zenman View Post
I've heard WD 40 might work but I've never tried it. Maybe try a small area first.
I am going to go try a little spot right now. Thanks!
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Unread 05-12-2013, 02:12 PM   #7
Indy
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Im going to assume that any method that will pull the primer is going to affect the gel coat as well. And any chemicals you try, be sure it wont attack the resin in the fiberglass itself. Best bet may be to just hit the whole thing with a coat of paint and buff it to a gloss. Maybe 2 hours work and $20.
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Unread 05-13-2013, 10:15 AM   #8
Balvar24
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Media blast with plastic beads?
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Unread 05-13-2013, 08:11 PM   #9
MATT99TJ
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Heat gun. Slowly and carefully heat up an edge of the paint where you can see the gellcoat. As you heat it up carefully try to scrape up the paint. If the gell coat starts to discolor you are getting it too hot. There is probably a very fine line between enough heat and too much heat.
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Unread 05-15-2013, 02:41 PM   #10
happymudder10
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I use "On and Off" hull cleaner on my boat. That stuff takes off anything without harming the gelcoat. BE VERY CAREFUL USING THIS PRODUCT, it is acid. wear eye protection, mask and black rubber gloves. (ask me how I know).
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Unread 05-17-2013, 12:16 AM   #11
Coyotes97
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Thanks for the tips guys. I have tried some with little success so far. Acetone is clearly softening the primer but it is taking loads of work to get anywhere. Really starting to consider sanding and recoating.

I am going to check out the "On and Off" hull cleaner though.
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Unread 05-17-2013, 12:41 AM   #12
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Originally Posted by happymudder10 View Post
I use "On and Off" hull cleaner on my boat. That stuff takes off anything without harming the gelcoat. BE VERY CAREFUL USING THIS PRODUCT, it is acid. wear eye protection, mask and black rubber gloves. (ask me how I know).
I'll bite. How do you know?
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Unread 05-17-2013, 09:42 AM   #13
Indy
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Originally Posted by Black Hills TJ View Post
I'll bite. How do you know?

*cough cough *'dead hooker in a bathtub *cough*



Hehehehe.
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Unread 05-17-2013, 11:47 AM   #14
TSGR
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If there was no surface prep maybe you could try pressure washing it off.
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Unread 05-18-2013, 12:51 PM   #15
happymudder10
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Originally Posted by Black Hills TJ View Post
I'll bite. How do you know?
Burned the crap out of my hand. I know there is a photo of it somewhere, but I can't find it.
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