thread size

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    Threads - Reverse Engineering

    Good morning, I am attempting to reverse engineer some threads for a customer, but I am a little confused. The outside diameter on the barrel threads is ~11.5mm, and the inner diameter on the cap threads, to my best measurement, is ~11mm. So, OD = 11.5, ID = 11.0, which would leave me to...
  2. S

    Parker and Sheaffer barrel threading

    Hello, I am trying to make custom barrels for some Parker 21s, 51s and Sheaffer imperials, dolphins and legacys (the cartridge converter models) does anyone know what taps I will need for the barrel threading for any of these? Any help would be greatly appreciated. Thanks,
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    Thread size for Classic Fountain Pen

    I would like to start making kitless pens like Mr. Fred Brunings but don't know the thread size for the Classic Fountain Pen from Penn State, or where to get the correct size die. I'm based in Ontario, Canada.
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