Modifying a Needle to fit it’s Jet

Discussion in 'Fettling Forum' started by podbros, Jun 26, 2025.

  1. podbros

    podbros United Kingdom Subscriber

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    Location:
    .. next to the Chester & Birkenhead Rlwy
    I have seen lots of threads where folks have had to take the shoulders off a needle so it fits properly into a jet but haven’t had to do that myself yet..
    ..Until now .. hmm how hard can it be thought i?

    IMG_4719.jpeg
    i can’t even see the hole in the jet

    so how do i take the shoulders off something i can only just get hold of?

    IMG_4720.jpeg well, i am fortunate to have one of these..

    IMG_4721.jpeg

    IMG_4722.jpeg
    it’s a hand-held magnifier with an illuminated battery lit light.. available in different magnifications and it may have saved the day.. again

    IMG_4724.jpeg Ah there’s the little begger

    trouble is i need an extra arm/hand hmm

    IMG_4726.jpeg
    well, this looks promising?

    IMG_4727.jpeg

    i wasn’t able to take a pic of the actual sanding as despite the cereal bowl’s help i still only have 2 hands but here is the piece of 180 grit wet n dry

    IMG_4728.jpeg and here is a better photo of part of one sanded shoulder

    IMG_4729.jpeg

    fingers crossed it will be able to function.. we will see

    thanks to everyone for posting pics of their work that has inspired me to have a go (kicking and screaming)

    I still don’t know if the thread is compatible with the lantern it is scheduled to fit into.. looks a bit coarse to me.. at least it might fit something :doh:

    thanks
    pb
     
  2. podbros

    podbros United Kingdom Subscriber

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    Update ; the needle seems to be too large for the jet :/
    I chamfered the shoulders enough to allow the needle to start to enter the jet orifice but something is not right
    I also used a fine oilstone to check if there was a burr on the end of the needle.. still not right
    I will search for the correct jet and needle sizes to see what I can find

    (apologies for the added apostrophe in the title )
     
  3. Sammi Jane

    Sammi Jane Subscriber

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    Hmm, you should read this... :lol:
     

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