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Thread: would i be right to assume the omega '53 movement ring is made from Iron?

  1. #1
    Senior Member foilguy's Avatar
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    Default would i be right to assume the omega '53 movement ring is made from Iron?

    Will likely have to make it from scratch on the lathe. Anyone that has the specs let me know. I can obviously work off the movement case and dust cover, but all the same.

    Whoops looks like i found the answer from Smithswatches

    http://www.ebay.co.uk/gds/OMEGA-53-M...8427040/g.html
    Last edited by foilguy; 10-06-2017 at 09:00.

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    It may be mu-metal. Which is an iron alloy. I can make accurate measurements if you need. I was planning on maybe turning some myself, but I have a few other tool making projects on at the moment which take priority. As I mentioned before, I think there could be a possibility of 3D printing them in metal.

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    Senior Member foilguy's Avatar
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    I thought that, until i saw the picture Dave linked to in another thread. I'm guessing MU metal isn't available in bar stock. 3D sintering seems to go against the mould, so to speak.


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    I can't find a copy of DEF-3 at the moment Paul only images of speedos..

    however the movement ring may be mu-metal rather than iron.

    here's some FA inspiration -



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    Mu metal is used extensively for anti-magnetic applications. It's often seen used for shielding electrical transformers (to stop the EMI interference). It could be formed, but this reduces its effectiveness as the grain structure of the metal is important. It's usually in the shape of a can / tube when used for transformers, so I guess it could be ordered in tubular sections.

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    Quote Originally Posted by dave View Post
    here's some FA inspiration -
    Can’t see no FA

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    Senior Member papazulu's Avatar
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    Don't talk to me about naval tradition. It's nothing but rum, sodomy and the lash.
    Sir Winston Churchill

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    Senior Member foilguy's Avatar
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    Got that cover. Guess I'll have to use iron bar. Not that I'm bothered about the Faraday cage, but in effect, it should still work as one.

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    Senior Member foilguy's Avatar
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    Quote Originally Posted by dave View Post
    I can't find a copy of DEF-3 at the moment Paul only images of speedos..

    however the movement ring may be mu-metal rather than iron.

    here's some FA inspiration -


    Thanks Dave. 🙂

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    Super Moderator dave's Avatar
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    Quote Originally Posted by Hentaiboy View Post
    Can’t see no FA
    well spotted however it refers to the OP before the first edit..

  11. #11

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    I made a hash of it because I'm not much Apple qualified (and I don't have images on this iPad). Look in the "dohicky" thread for the original Omega order that indicates all but the callotte is "soft iron."
    Bill in Sacramento

  12. #12
    Senior Member foilguy's Avatar
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    Callie being the dust cap?

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    Super Moderator dave's Avatar
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    Quote Originally Posted by Bill in Sacramento View Post


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    Senior Member foilguy's Avatar
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    Colette sorry. All thimbs, sorry thumbs😊

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    Super Moderator dave's Avatar
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    calotte = cover

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    Senior Member foilguy's Avatar
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    Well good news then, if I can get accurate measurements should be able to produce a calotte from some iron round bar.

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    Super Moderator dave's Avatar
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    perhaps you should start taking orders ? ..

  18. #18
    Senior Member foilguy's Avatar
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    Have to find a supplier of soft iron bar
    1 1/2 inch first. Not so easy it seems.

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    Senior Member foilguy's Avatar
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    Well it ain't cheap. 40mm (1 1/2 ") @ 400mm round bar is around £150. ARMCO® soft ingot iron. 100mm is £112. So it pays to buy the 400mm length.

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    That ring looks almost like the ring that is in CWC watches. Those are made in brass and then nickelplated i think.

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