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Thread: Fiberglass/Bondo Help

  1. #1
    Variable Bitrate Leddy's Avatar
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    Fiberglass/Bondo Help

    I'm just about done with the fitment of the lilliput into my dash. I just have a few potholes to fill in and sand over. I've noticed a few places around the edge of where the bondo meets the dash it's seperating ever so slightly. enough to just irritate me to no end.

    The solution I had would be to run a few thin layers of resin over top w/o any kind of mat or cloth. I would then sand down smooth and paint over.

    Is that the best way to do it? Or is there something I should know that I don't?

    This is my first experience with fiberglass/bondo so I'm still learning.

    Here's what I'm working with, you can see a little of it on the bottom right "leg"
    2001 Pontiac Grand Prix GTP Sedan (Sold)
    2007 Scion tC
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  2. #2
    Jesus Freak antimatter's Avatar
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    I can't really tell what your talking about.

    Did you epoxy the bezel in place? I ended up epoxying afterwards but Bondo is just a filler and will crack and wont hold the piece in place so it is crucial to epoxy.

    Why don't you fill in the line that goes all the way around with bondo. It will make it look more OEM.

    Sorry i can't help you more. Post another more detailed pic of your problem area
    -Jesus- King of Kings Lord of Lords

  3. #3
    Maximum Bitrate Altimat's Avatar
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    You have an adhesion problem. Do not apply bondo over anything unsanded. Always sand the area where a filler is to be applied. Your best bet at this point is to sand back the bondo where it is applied over an unsanded surface, and then reapply bondo and sand it smooth.
    Fabricator

  4. #4
    Constant Bitrate
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    use a sandable primer and put a few coats on and sand it down. should smoth everything out

  5. #5
    Variable Bitrate Leddy's Avatar
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    Thanks for the replies, I never saw any responses so I thought I was overlooked

    The dash trim was partially sanded when applying. I guess I will end up sanding down and reapplying some. I feared that was my best option. But wanted to ask first since it's the most difficult one to accomplish.

    What grain paper should I use before applying bondo? do I want it super smooth or grainy so it has something to "bite" onto?

    I didn't want to fille the bezel in for a few reasons..
    1.) It's a lilliput, just in case of problems I don't want any hassles about warranty issues.
    2.) I actially like the look it is now
    3.) I don't want the LCD to become a permanent fixture to the dash trim since I remove it rather frequently.
    2001 Pontiac Grand Prix GTP Sedan (Sold)
    2007 Scion tC
    WhereIsMyGPS.net Online Tracker
    http://www.cardomain.com/id/leddy

  6. #6
    Maximum Bitrate Altimat's Avatar
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    Quote Originally Posted by Leddy
    What grain paper should I use before applying bondo? do I want it super smooth or grainy so it has something to "bite" onto?
    About 180 grit.
    Fabricator

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