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This is my first question on WatchRepairTalk and I’d like to know when to use a crystal lift and when to use a crystal press? I’m in the process of cleaning up and servicing this "Wostok Made in USSR" watch which I believe was manufactured in the beginning of the eighties and that I got off eBay for about $25. As can be seen, the crystal is pretty badly scratched and I want to remove it from the case and then sandpaper it according to the following method. I want to remove it for two reasons. Firstly, I want to avoid scratching the case while working on the crystal, and secondly, I want to be able to reach the edge inside the case the holding the Roman numerals so that I can better inspect it a clean it. As far as I can tell the crystal is an acrylic crystal without a tension ring. For this crystal, I believe a crystal lift (which I don’t have) is the right tool? I do have a crystal press but I don’t dare to use it on this crystal. My guess is that a crystal lift is used for acrylic crystals without a tension ring and that a crystal press is used for acrylic crystals with a tension ring and for crystals in mineral glass and sapphire? Anyway, I’m just guessing here and really don’t know so I’d really appreciate some facts about "Crystal Press vs. Crystal Lift". I’ve also contemplated just trying to remove the metal edge holding the Roman numerals from inside the case, but as far as I can tell having had a close look in my stereomicroscope (40X), the inner rim of the watch case holding the Roman numerals is an integral part of the case, i.e. not removable. I don’t have a camera for my stereomicroscope so here’s a macro shot (iPhone with macro lens). Perhaps it is indeed removable and it’s only an optical illusion? What do you think? It certainly won’t budge one bit when I try to pull it and wiggle it. Best regards
Thanks for the kind welcomes in the introductions forum! Also for the advice, but now I must post what the problems are but no diagnosis and the causes. I appreciated the information on what battery would replace the Watch Battery 343 which was on the last battery I had in the watch. It would have been a mercury battery and those are no longer sold. One kind soul suggested an AG 10 would work, and I went to Batteries Plus to pick one up. They assured me a 389 RENATA is the equivalent and it's listed as a Silver Oxide 1.5 watch battery. The dimensions were the same (diamter and thickness) as the 343. I was excited to see if it would produce movement. But it did not. I also moved the hand with the stem but no movement happened. I attached a photo of something I noticed about 25-30 years ago when I set the watch aside, which could be a clue. There is a 3-pronged electrode inside the case, that sits almost flush to the inside atop what looks like gold colored mylar. I suppose that's an insulator. But, the electrode can swing side-to-side. I moved it carefully to one side for the photo. The 3-pronged electrode on the battery cover is mounted in the center. It occurs to me that the electode inside the caseing could be the issue but I have no experience here. I also took a photo closeup of the BENRUS case. Two lines below the stamped name it is stamped "OPEN THRU CRYSTAL". Maybe fools rush in where angels fear to tread. I have seen watch crystal lifts, but don't own one. I know I would need that and some tools to begine this. It will of course have repairs beyond my newbie abilities. ShouldI gather a few tools and learn now? I'm not in a hurry and I certainly know a tool or tools is not part os the repair cost. But if buy the tools and treat this what like a medical cadaver to learn some things is that worthwhile? And maybe, just maybe, I can bring Frankenstein back to life. Mark