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Filling the cracks/gaps in tail lights

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  • Filling the cracks/gaps in tail lights

    I'm curretly in the process of repairing my cracked tail lights. I'm looking for some advise for the stuff to use to fill the cracks/gaps. I already tried Bison 5min epoxy glue inspired by some youtube videos but that stuff won't stick to material that is used on the lights. Does anyone know a proper glue/filler to use?

  • #2
    For hairline cracks, a few drops of MEK using a syringe will fill them by capillary action, it will melt the plastic and re-seal them
    You can then polish out any overspill with plastic-RX or similar

    Also, a pot of model clear red paint comes in handy when touching up, you can build it up and sand out
    1989 NG Q Pick-up (Daily)
    2002 ASZ Golf (Doris' Daily)
    1997 AJK-G2 A6 Avant Q (In surgery)
    1999 AGZ Bora (Daily 2)
    1994 ABC A6 Avant (Spare)
    1984 JS Coupe GT (Slow progress)
    1982 WN Coupe GT5 (Spare)
    1983 MK1 Golf GTI Pirelli (In storage)

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    • #3
      Thanks for the tip My problem is the larger gaps. One piece had fallen completely off and it's now glued back together. Only thing is that is not a perfect fit and the gaps need to be filled.

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      • #4
        If you happen to have access to chloroform, that also melts certain plastics (mainly from the acrylic family) and is watery consistency to run into cracks.

        I know this from a previous job where acrylic fabrication work was part of the business rather than a more medical use

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        • #5
          I think those substances are not available to me

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          • #6
            Haven't tried but think you could melt same color tail light plastic to MEK and use that goo to repair those bigger caps?
            -93 Audi S2 Coupe ABY
            -74 VW Type 1 1300 (2110cc)
            -97 VW Golf VR6 Syncro as a daily driver
            https://www.lokoverkkaritalli.com

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            • #7
              Thanks for the tips, MEK seems to be available here, so I'll give it a shot

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              • #8
                Please share the methods and results after you have tested it. My back lights are also seen their better days and someone has used glue trying to repair those..

                If that MEK thingy works it would be cheap fix

                I was thinking that I could try windscreen repair "glue" as it cures with uv light and definitely would go to cracks..
                -93 Audi S2 Coupe ABY
                -74 VW Type 1 1300 (2110cc)
                -97 VW Golf VR6 Syncro as a daily driver
                https://www.lokoverkkaritalli.com

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                • #9
                  Tried this today. The plastic of the taillights does not melt to MEK, thinner or acetone. Xylene is the only solvent that I have not tried yet. If that doesn't work I have to come up with new ideas to fix the lights.

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