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Thread: What kind of plastic are Lucas switches made of - and what kind of glue to fix them

  1. #1
    Join Date
    Apr 2010
    Posts
    148

    Default What kind of plastic are Lucas switches made of - and what kind of glue to fix them

    Does anyone know what kind of plastic Lucas likely used for the heavy black shell of their late 1960s - early 1970s toggle switches? I need to glue one back together and would like to use something that'll last and won't weaken the plastic.
    1970 Series IIA
    1964 Series IIA [sold]

  2. #2

    Default

    I don't know what kind of plastic was used but you might want to try JB weld plastic weld. It's an epoxy that comes in a syringe. It works well on most hard plastics. As far as weakening the plastic I could only guess but those parts are around 50 years old. That's what I would try.

  3. #3
    Join Date
    Sep 2010
    Location
    killingworth CT
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    836

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    The type of plastic used by Rover on switches is the easily breakable kind. Don't ask me how I know.

  4. #4
    Join Date
    Feb 2007
    Location
    Phippsburg, ME
    Posts
    886

    Default

    Quote Originally Posted by etandrews View Post
    I don't know what kind of plastic was used but you might want to try JB weld plastic weld. It's an epoxy that comes in a syringe. It works well on most hard plastics. As far as weakening the plastic I could only guess but those parts are around 50 years old. That's what I would try.
    X2. IMHO JB Plastic Weld is a strong choice.

  5. #5
    Join Date
    Dec 2015
    Location
    Bountiful, Utah
    Posts
    26

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    They used to advertise that J.B. Weld would repair a cracked engine block. Never tried that, but I like J.B. Weld a lot!

  6. #6
    Join Date
    Apr 2010
    Posts
    148

    Default

    Thanks all, I used the JB Weld and it seems to be working.
    1970 Series IIA
    1964 Series IIA [sold]

  7. #7
    Join Date
    Mar 2015
    Location
    Denver, CO
    Posts
    150

    Default

    I believe they are made of Bakelite.


    Colin

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