Caseback removal tricks
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  1. #1
    Member Fergfour's Avatar
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    Caseback removal tricks

    I have a titanium screwback and I can't for the life of me get the caseback off. I've tried a 2 prong and 3 prong tool with all my strength. I added some 3 in 1 oil, let it sit, tried again no luck. First time I haven't been able to remove a screwback here. Took it to a jeweler, no luck. Was told to invest in a new watch. Real helpful. Took it to another jeweler and the watchmaker will look at it Monday. They think some of the threads might be misaligned.

    I really don't think one of those ball things would do anything in this case. I was wondering if heating it or freezing it would make any difference? I was thinking maybe a hammer of some sort to pop the threads in place if they are misaligned as well. Thanks for any suggestions.

  2. #2
    Member MoodyKeyboard's Avatar
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    Re: Caseback removal tricks

    Well the freezing will need some serious calculation .. Steel contracts One mm per 100 °c change.

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  3. #3
    Member Fergfour's Avatar
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    Re: Caseback removal tricks

    It's titanium. I guess if the watchmaker can't get it off I could try aerosol freeze spray, or more brute force like hammer sand chisel. Without a battery the watch is useless so I'm willing to deal with some dings and scratches on the back.

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  5. #4
    Member perfectlykevin's Avatar
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    Re: Caseback removal tricks

    ok, bare in mind I haven't finished my first cup of coffee yet, but I think a common screwback wrench might not provide enough torque to get it to budge. Maybe tr affixing a longer handle to the caseback and giving it a pull. Not sure how exactly to accomplish this. The idea is kinda like loosening the lugs on a tire. if it is stuck and you have a short handle it won't move. Extend the handle and it becomes easier. I'm thinking some kind of metal handle affixed to the caseback with a liberal amount of Crazyglue. then once the back is off use another chemical to deteriorate the Crazy glue. Titanium should hold up to what ever you put on it :)

  6. #5
    Member Snaggletooth's Avatar
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    Re: Caseback removal tricks

    Superglue a large nut to the case. Use an appropriately sized socket & bar to open case. Remove nut and superglue with acetone.

  7. #6
    Member Fergfour's Avatar
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    Re: Caseback removal tricks

    Interesting approach might have to resort to that. That's gonna be a big bolt! Might have to put the watch in some vice grips as well.

  8. #7
    Member GaryK30's Avatar
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    Re: Caseback removal tricks

    I wonder if putting a few drops of silicone oil around the perimeter of the case back, and allowing it to seep in, might help free up the threads.

    Perhaps the problem is "galling."

    https://en.wikipedia.org/wiki/Galling

  9. #8
    Member Fergfour's Avatar
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    Re: Caseback removal tricks

    I used 3-in-one oil. Maybe I didn't let it sit long enough. Or maybe silicone oil works differently.

  10. #9
    Member samael_6978's Avatar
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    Re: Caseback removal tricks

    Do you have wd-40 in your country? I never had to use it on a caseback, but had some luck with some stubborn nuts and bolts...

    BTW vice grips may damage the case.

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  11. #10
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    Re: Caseback removal tricks

    Maybe you can try it with a piece of copper or aluminum (for not damaging the caseback) with the thickness of 1 millimeter. Then file a slot in to the piece of copper or aluminum that has the width the same as the distance between the 'holes' in the caseback. Hard to say in english,thats why i made a little drawning to make it more understandable.

    Name:  Caseback.png
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    This way maybe you can open the caseback.
    Last edited by Jasabor; August 26th, 2017 at 23:26.
    Certified G, Fergfour and brandon\ like this.

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