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Old 07-25-2011, 03:12 PM
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Fiberglass question.

OK, I won't go into what total pieces of crap the 'glass Auburn Speedster rear fenders I bought for the Diamond T are, that would take way too much time, but this is related to that.

Today I shot some 2k primer on the fenders, after filling some obvious flaws in the gel-coat. These were craters, mainly in spots where I'd DA'd thru the black gel-coat. Once I started shooting the grey primer, I saw what I initally thought were "fish-eyes" in the primer. I had a gun full of primer and no where else to put it, so I kept going.

What they are, are simply dozens and dozens of very small pits in the gel coat, like the ones I noticed, and they're ALL OVER the fenders. The gel-coat is also very brittle, and seems to be in a couple layers, which are also hard to feather.

My question is this, should I DA the primer off once it's cured, dig out the pits or drill them, and spread a thin layer of finish polyester filler over those areas? I'm afraid what's going to happen is that once painted, and the thing sets out in the sun, more of these will "pop" and I'll have blisters everywhere.

Any advice?

Brian

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Old 07-25-2011, 05:09 PM
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If it were me [which it ain't thankfully] I'd sand down the 2K at least partially & see if it will "feather" , if so then take something w/ a round tip & go over the whole surface w/ pressure looking for air pockets , then sand ,fill , feather as needed & put the fenders out in direct sunlite for a few days, if your in the center of the country, should be hot enough to bring out any more problems .


my .02 , dave
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