The next step it to make sure to remove any left over glue in the bezel opening by using a sharp tooth pick. Once it's out, you can get down to business.
CYMA POCKET WATCH PLASTIC CRYSTAL INSTALL
A special tool is used to remove and install those crystals.įor a non-round crystal like on this Perry, it's glued in and if it's not loose you can free it by either (a) boiling it in water for a minute or (b) put it in an ultrasonic jewelry cleaner for a couple of minutes. Round crystals are often friction fit (principally the acrylic / plastic kind) where the diameter of the crystal is ever so slightly larger than the bezel opening. Non-round crystals are typically glued into the bezel with either a "cement" or "UV-curable glue". Sometimes it's already loose and you can just push it out with your thumb. So your first question is probably, "how do you get the old crystal out?". Not only does it need a new crystal, it also needs a new number 1 hour marker (we'll save that for another day). Take for example this 1931 Hamilton Perry. But they are very hard to scratch - which is why they are used on most high-end modern watches.Ĭrystals on vintage watches are easy do-it-yourself projects if you have an interest to tackle it. Sapphire crystals are much more expensive and may require specialized equipment to install. They are harder to scratch but once scratched they can't be buffed out. Mineral glass crystals are slightly more expensive and more difficult to install. They're easily scratched but it's also easy to buff out surface scratches.
Plastic crystals are inexpensive and easy to install. plastic, mineral glass, and synthetic sapphire. Beyond just providing a clear perspective of the dial, it also protects the dial and hands from the damage and can be an important design element by including facets, bevels or magnifying windows.Ĭrystals come in three basic materials. The watch crystal serves a very important purpose. It's amazing what an improvement a fresh watch crystal makes to liven up an old watch.
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