Jump to content

Acrylic crystal fitting help

Chopin

By Chopin
in Watch Repairs Help & Advice

 Share

Recommended Posts

Chopin Super WRT Addict

Chopin

Posted
Posted

I have a vintage watch that needs a crystal replacement and I'd like confirmation from someone that the right crystal for it is a non-tensioned acrylic crystal. I'd guess a normal one but maybe someone else can correct me.

As you can see the chapter ring leaves little room between it and the case and the approximate space between the ring and the case is about 0,5mm. Is this right ?

I don't have any acrylic crystals around so I just need someone to confirm or deny this because I have to order one soon.

IMG_6516.jpg

Link to comment
Share on other sites
Chopin Super WRT Addict

Chopin

Posted
  • Author
Posted

That's good to hear. I could sandpaper it just a bit in case it needs some correcting.

Just out of curiosity what is the non-tension ring crystal equivalent of ATC crystals ? Is it High Dome with step or without step ? (not sure what the difference is...)

Link to comment
Share on other sites
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • rjenkinsgb
      Chronograph Pusher Rod for EB8371-67 Snapped and Stuck in Button. Can't Unscrew.

      By rjenkinsgb · Posted

      Look carefully at the tube end?? It appears to me to have a fragment thread visible? Either that or a step just away from the end? I can imagine a chamfer, but a step seems odd - but I've never seen the tubes used on these.
    • Waggy
      Pocket watch escape wh

      By Waggy · Posted

      This is a very valid point and a subtlety that I was unaware of until fairly recently, learning all the time, the video below explains this point well:  
    • HectorLooi
      Blew it with a coil

      By HectorLooi · Posted

      You don't have to use his special tester. Any good multimeter would work.
    • nevenbekriev
      Pocket watch escape wh

      By nevenbekriev · Posted

      Yes, it looks like GT Revue 30. Doctor, You can not replace escape wheel by the dimensions You listed. One needs to know much more things like number of leaves of the pinion and it's diameter, the position in high of the table and the pinion, the hight between the pivots, the exact pivots diameter... And then, even if suitable wheel is found, one will need to know how to adjust the pallets position correctly. Restoring antique movements is something different than replacing parts. In older movements parts are not interchangeable, this means spare parts do not exist. Here the case is different, but still escapement adjustment will be needed if a wheel from a donor is found. So may be it will be easier to restore the donor for You...Restoring antique movements usually means making of the parts needed and this requires knowlage and working on lathes skill. In this case repivoting of the wheel is the natural solution, but there is a long way that one must walk untill getting ready for such work.
    • Waggy
      How to store one dip

      By Waggy · Posted

      I was looking at Essence of Renata, a chemical used a lot for cleaning hairsprings: "Specially prepared solution for degreasing watch and instrument components. Indispensable for degreasing hairsprings." Looking at the MSDS you can see this is just pure n-Heptane, so could be an option for those who don't want to use the chlorocarbons or hexane?     HF6013 - Horological Essence COSHH Safety Data Sheet Horological Essence_0.pdf
×
×
  • Create New...