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Thread: Help for changing Calumet C-1 ground glass

  1. #1

    Join Date
    Mar 2015
    Location
    Italy
    Posts
    98

    Help for changing Calumet C-1 ground glass

    Hello,
    I need to replace the gg. It is held in place by three clips, which I think I have to loosen. I cannot figure out which kind of screwdriver I need. Help would be much appreciated.

  2. #2
    Bill
    Join Date
    Oct 2017
    Location
    Houston, TX
    Posts
    37

    Re: Help for changing Calumet C-1 ground glass

    On my C-1 they are normal Phillips heads. Can you provide a photo of yours?

  3. #3

    Join Date
    Mar 2015
    Location
    Italy
    Posts
    98

    Re: Help for changing Calumet C-1 ground glass

    Thank you very much.
    I thought so, but they are not so common here. Do you have an idea of size? It seems pretty small

  4. #4
    Bill
    Join Date
    Oct 2017
    Location
    Houston, TX
    Posts
    37

    Re: Help for changing Calumet C-1 ground glass

    I just had a look at one of them under the microscope. They appear to be #2 imperial machine screws with 56 teeth per inch, and a standard Phillips head. The heads on mine are stripped, so I got a thin metal saw blade and cut a slot along the diameter of the heads so I could use a normal flat head screwdriver. Hope that helps.

  5. #5

    Join Date
    Mar 2015
    Location
    Italy
    Posts
    98

    Re: Help for changing Calumet C-1 ground glass

    Thank you, Bill. It helps a lot.

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