Jump to content

Recommended Posts

Posted

Hi all

Looking for some advice regarding the replacement of crystals on modern low cost quartz watches, the ones with the thin white nylon gasket.

I really struggle with these with the gasket often popping off when I try the press the glass in place with my crystal press.

It's same if use the original or a new one.

What the secret to fitting this type of crystal and gasket, any tips.

Thanks for any help with this

Paul

Posted

I had this problem too. Even broke a few crystals before I learnt how to do it.

If you look at the edge of the crystal, there is a beveled edge and a square, less beveled edge. Intuitively, one would think the beveled edge is there to facilitate easier insertion and should go towards the watch case. But that is wrong. The square edge goes towards the case. And you will need a good crystal press that puts even pressure all round. Make sure you place the crystal carefully so that it doesn't pinch the gasket and damage it. Sometimes the generic gaskets do not fit the case as well as the original one, so be very careful.

The beveled edge is for cosmetic purposes and probably to prevent chipping during daily use.

Hope this solves your problem.

  • Like 1

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Ok, as per pictures I have a smiths rim set and wind on the bench, swimming in oil but all sorted. The fault I have is the mainspring bridle has lost its tab/notch/hook, like a hebdomas pocket watch the mainspring is fitted to a bridal in the barrel which slides around on full wind onto 4 notches in the barrel wall, thus stopping damage to the mainspring by over enthusiastic winding. So my questiion is this, what is the best way to create another hook in the bridal, my thoughts are along the same lines as making a new hole in the mainspring end, annealing etc, but what and how to make the hook?? I have a pair of barrel hook pliers that work great in soft brass but won’t even scratch the bridal, what I don’t want to do is whack a hole into it and not have a hook. the pictures are of the bridal ( broken) and a hebdomas ( complete ) incase you are wondering what I’m on about. And a few of the serivce. Thanks for any advise.
    • Decided to give the case and bracelet a good cleaning and my first shot at polishing/brushing. Went with the Cape Cod polishing cloth and gray scotch brite method.  Before First; Then After; Then comparing to some original links from when the watch was new to now.       
    • What is this (left of the red line)? hairspring? Frank
    • It's either bent or hung up on something or both. The hexane won't hurt it, and hanging from a balance tack indefinitely won't hurt it.   If the spring is glued to the stud there's a chance that the glue was softened and the outer coil stuck to the stud. Haven't seen that happen, but I suppose it could. Don't know if hexane affects the glue used either.
    • Hello all. some help required here from the community please. I serviced this movement, which was running reasonably well, but the balance spring which was running healthily before I started, after cleaning in hexane for 30 secs, is all bunched up at the stud. I did store the balalance on a tack thereafter for a day.   could the spring be strained under gravity? I demagnetised of course, and the balance is squeaky clean. some help would be much appreciated. Thanks, Tony G    
×
×
  • Create New...