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Thread: bonding fiberglass fender flares to plastic fender Help

  1. #1

    bonding fiberglass fender flares to plastic fender Help

    Looking to bond and mold some semi widebody fender flares to my front end. I'm currently making fiberglass mold (clay method )and need some ideas how to attach and make it flush after I bolt them on. I'm novice and not aware of products that can help.
    On my rear ( metal fenders) I'll be bolting the peice on, fiberglassing onto the metal, bondo-glass and bondo.

    Thanks in advance and any feedback appreciated

  2. #2
    Senior Member MacGyver's Avatar
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    As far as I know. I think you may have a challenge attempting to bond fiberglass to a plastic fender. At least for any long term without having it separate and crack. You may want to conceder a bolt on fender flair or blend it into the plastic with bondo and use the whole thing as a plug, and then make the entire fender out of fiberglass.

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    Senior Member murcie-me's Avatar
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    Quote Originally Posted by MacGyver View Post
    As far as I know. I think you may have a challenge attempting to bond fiberglass to a plastic fender. At least for any long term without having it separate and crack. You may want to conceder a bolt on fender flair or blend it into the plastic with bondo and use the whole thing as a plug, and then make the entire fender out of fiberglass.
    Exactly.

    You will never be able to blend the two together and not have it crack at the seam over time.
    Once you get the fender the way you want it, unbolt it from the car and make a mold of the entire fender. The rear wont be as easy, its tough to "unbolt" a quarter panel. The best way would be to make the rear flares from sheet metal and weld them to the car, then flush it all out with Bondo.
    Without talent experience is worthless

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