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Thread: Any plastic crack repair tricks?

  1. #16
    Join Date
    Apr 2012
    Location
    USA
    --
    4,114
    I searched around a bit on the super glue trick, and everything seems to point to that the baking soda acts as an accelerate for the normal super glue reaction. It sets up nearly instantly, and the process is baking soda first, then super glue. Heat is generated in both reactions, but with the accelerate it makes more heat since it's a faster reaction. Neat stuff to know, seems it also helps the super glue bond to surfaces better and such too.

    Would be neat for someone to test this on a junk set of plastics and see how hard it is to re-break them. I suspect the flexing would be a problem, but for smaller plastics like headlight housings, it might be a perfect solution. End result is paint able, but it might yellow and cause a slight color change in the paint at the repair location (if it's filling a hole). I know I have a junk fender around, but I'd have to figure a good way to get a nice clean break in it and buy some superglue lol.

  2. #17
    Join Date
    Jul 2005
    Location
    Manheim, PA
    --
    5,742
    i drill a 1/8" hole at the end of the crack. a crack can no crack around 360 degrees. then every 1/4" i type wrap them. not the X stitch, just straight. I go ride then. New plastics are cool if they are too bad.

  3. #18
    Join Date
    Oct 2018
    Location
    Arroyo Grande
    --
    16
    Zip ties. Or, as the kids call them, drift stitches!

  4. #19
    Join Date
    Mar 2019
    Location
    Oswego, New York
    --
    8
    I used a 60 thou thick piece of sheetmetal behind the crack. Drilled a hole, put a cleco in it, then started drilling the rest of the holes and riveting them.

    Click image for larger version. 

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  5. #20
    Join Date
    Jul 2018
    Location
    TN
    --
    1,065
    Few more rivets and that ATC is ready for a Judas Priest concert!

    Probably a very solid repair.
    I was born and raised on Venus & I may be here a while.....

  6. #21
    Join Date
    Mar 2019
    Location
    Oswego, New York
    --
    8
    It looks pretty metal right! Haha

  7. #22
    Join Date
    Apr 2012
    Location
    USA
    --
    4,114
    Not many people think of riveting them back together, works great for sheet metal, so why not plastic + sheet metal =D. Now where to find them Honda Red Rivets.

  8. #23
    Join Date
    Jun 2019
    Location
    Kenora Ontario
    --
    13
    I find zip ties work really well for fenders my 185s fenders are held on only by zip ties works mint

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