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Thread: How did Parker or Esterbrook add cap trim rings?

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    Senior Member azkid's Avatar
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    Default How did Parker or Esterbrook add cap trim rings?

    I'm working my way up to making my own fountain pens. I got to wondering how companies installed trim rings on I Tage pens, like the Parker Duofold and Esterbrook LJ pictured below.

    Both of these seem inlaid into a channel somehow.

    Did they just slip it on? Did they have to heat the material to make it more flexible first? Or is there some other magic at play?

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    Senior Member christof's Avatar
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    Default Re: How did Parker or Esterbrook add cap trim rings?

    the cap rings were slipped over and then swaged in place with special tools.
    unfortunately, I don‘t have a picture..
    C.
    Last edited by christof; September 12th, 2019 at 01:56 PM.

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    azkid (September 12th, 2019)

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    Senior Member azkid's Avatar
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    Default Re: How did Parker or Esterbrook add cap trim rings?

    Interesting. Well... That might be out nof reach then. So is the following...

    I found this video about Pilot pens and in it at 10:32 they talk about molding the cap with the trim in place. Interesting but of course not the way I was planning to do it. https://youtu.be/lTjwbemFyRY

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    Senior Member christof's Avatar
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    Default Re: How did Parker or Esterbrook add cap trim rings?

    the first versions of modern parker duofolds were made different again. the cap lip was a seperate part that was glued to the cap tube to hold the cap rings.
    there is a section drawing in the duofold book...
    c.

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    Default Re: How did Parker or Esterbrook add cap trim rings?

    Older pens had their cap band swaged as mentioned. Basically, a tool that compressed the metal wring into the grooved area on the cap. Makes fixing them a real problem unless you have the tools.

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    Default Re: How did Parker or Esterbrook add cap trim rings?


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    azkid (September 13th, 2019), christof (September 13th, 2019)

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    Senior Member christof's Avatar
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    Default Re: How did Parker or Esterbrook add cap trim rings?

    Thank you Fred.
    This is exactly the tool I was talking about...

    http://www.fountainpennetwork.com/fo...ing/?p=2019686

    C.

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    Default Re: How did Parker or Esterbrook add cap trim rings?

    Bands like that on an Esterbrook can be rill swaged but that is more too intensive.

    Make your bands then make the cap in two parts and assemble. The modern Duofolds use a stack of rings held in place by a screwing the bottom cap lip in place and setting with thermal glue.

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    azkid (September 14th, 2019)

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