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Interactive disassembling/assembling guides

VWatchie
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    • nevenbekriev
      Is it possible to straighten this pivot?

      By nevenbekriev · Posted

      Search 'PCB carbide drill bits'. They come in sets of 10 or 50 and have 3.175mm tail. They are cheap rather than affordable. Using this drill bits has been discussed here many times - they are longer than needed and easy to break, so it is useful to practice sharpening hem and drilling some useless parts to gather some experience before real work.
    • Stevo2022
      Setting Hands On 7750

      By Stevo2022 · Posted

      I'm a newb who is a bit late to the party here. I've purchased a Horia movement holder clone. And I'm aware that the support pins for the SW500 chronograph jewels can be different sizes. I purchased 0.8mm pins with the holder. These were all that were available at the time. Will these be the right size? Can someone shed a little light on this for me please?
    • Stevo2022
      Chinese 7750

      By Stevo2022 · Posted

      That looks fantastic! I'm obviously a little late to the party here. Can you tell me where you sourced the case that you used in this build?
    • Nucejoe
      Rolex 645: shock protection cleaning and pivot wear

      By Nucejoe · Posted

      If pivot shoulder almost touches the mainplate, you will see lower amplitude and free oscilation comes to stop quicker. Such touching can stop the watch. This caliber is based on FHF, I think. So some parts of a cheaper movement of same caliber might interchange.  Both observation point to pivot worn short, which support you suspect , "worn pivot".  The problem with pivots wear to this point is , though the watch runs, pivots can easily jump out of jewel holes in the event of shock, pivots are actually not touching the end stones.   Classic watch repair recommends staff replacement or elongating pivots. Non classic let's you flip the end stones to have the dome side of end stone facing the pivot end, this will somewhat or wholly  compensate for the wear.  Regs  
    • GPrideaux
      Bulova Rubaiyat 1920/21

      By GPrideaux · Posted

      This watch has a pin end mainspring. It's a blued steel spring and may be the original >100 year old part. As you can see, it is quite set. Can anyone suggest where I might be able to obtain such a spring today? Dimensions: Height: 140 Thickness: 010 Arbor diameter: 340 Barrel diameter 989 (1/100 mm)  
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