How can I fix these Cracks!!!!!!!!!
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How can I fix these Cracks!!!!!!!!!

  1. #1
    Senior Member johnf's Avatar
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    Default How can I fix these Cracks!!!!!!!!!

    The pics are on the deck, Can I bondo these? Or will primer fill it. Or does it shrink too much?? If I sand all the yellow off cracks are gone, but the one crack between colors is bad. Seems like it would have done this even if it wasn't painted??? Or do I need to reglass the whole decklid or can I just go over the cracks. I love sanding!! tHANKS for any help. Johnf

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    Senior Member OFFSHORE GINGER's Avatar
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    John, actual cracks in the glass eventually will re-appear if not repaired properly .

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    Senior Member johnf's Avatar
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    Quote Originally Posted by OFFSHORE GINGER View Post
    John, actual cracks in the glass eventually will re-appear if not repaired properly .
    With that being said. Grind crack down and go over it with a strip of matt or do I need to use cloth. And hope it doesn't crack where I feather it in next to it. Would using Gellcoat on the decklid be a better option than paint? I have nothing but time to grind and sand too cold to glass or paint for a few weeks. Thanks johnf

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    Senior Member johnf's Avatar
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    Quote Originally Posted by OFFSHORE GINGER View Post
    John, actual cracks in the glass eventually will re-appear if not repaired properly .
    Well Ginger This is my attempt at repair!! You can see old line but the crack is gone. Now going to put a piece of matt all the way to original gell then smaller pieces to build up the middle?? About an 1/8" or less to fill. then sand and hopefully only glass once.(But probably not) Then fill holes and low spots with Bondo type filler very thin. Then primer. Would that be close to proper??? Thanks johnf

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    Senior Member Sanger-Spectra's Avatar
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    Let Ginger chime in, i am a novis with just enough time on this to be dangerous. But make sure that with your final patch you allow for a sanding coat of resin, if you do a final block and are into the glass repair that will eventually transfer thru your finish. looks like fun, just did this with a Spectra20 stripped the entire bottom and top decks, had to do a ton of repairs like this but i enjoyed learning a little bit of the old school stuff.

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    Senior Member SoldHondaBoughtHondo's Avatar
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    I wrote this earlier this afternoon but forgot to post:


    My hydro had a bunch of cracks when i got it. I have had good luck with grinding them gone and then a little more, and twice the size. Patch with layers of cloth, small pieces in the bottom of the hole and larger as you work your way out. Get the glass work as close as possible and just low enough for thin bondo to feather it.

    I did mine with cloth only....thinking that the hull is cloth it should be repaired with cloth.I have no idea how a pro would do it but the cracks haven't come back in 2 yrs and 100 hrs. One thing i did notice...don't know if it might apply to your deal. I did a lot of the prep work when it was cooler 50-60* It gets 110+ here and what was reasonably straight in cool weather isn't as nice in hot weather
    although the repaired area doesn't show.
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    Senior Member johnf's Avatar
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    Thanks guys, I'll add this info to my arsenal!! Maybe I'll try that surfboard glass, I have the matt to do the capping. I'll get a few of the other weight stuff to and see how thick I need it. I glassed a surfboard and patched a dune-buggy in high school, but the only problem is that was in 1975 so it's a little foggy If you know what I mean!!! HEHE,,, thanks johnf

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    Member swamprat9's Avatar
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    I have the same cracking on my deck but I was gonna try to fill them with resin and sand the deck cause I wanna try and save the gel.I was thinking the cracks are from heat and cooling cycles and sun exposure,so has anyone tried to do it this way?

  11. #9
    Member V-Driven's Avatar
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    Default Crazy Gel-Coat

    Quote Originally Posted by swamprat9 View Post
    I have the same cracking on my deck but I was gonna try to fill them with resin and sand the deck cause I wanna try and save the gel.I was thinking the cracks are from heat and cooling cycles and sun exposure,so has anyone tried to do it this way?

    I am having the same problem, has anybody else had this fixed?

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