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Showing content with the highest reputation on 06/03/2021 in all areas

  1. "Just arrived the sternkreuz XS 302.450 for rolex 116 and fit better than the stock BP, i mean the plexi inside diameter stick perfectly the rehaut, is impossible rotate it when placed over the rehault." I guess I tried 6 or 7 crystals on my '1655' and only two or three felt right on the case neck, much like you describe. "but the external diameter of this plexi is like the BP stock , a little too big for my Vietnam bezel, maybe i can push it down (with a plastic tube self-made tool) but sure it crack..so i prefer to shave down it a little." Probably the best fix. It is similar to what I ran into. One crystal cracked because the bezel was too small or the crystal was too big OD and the crystal that is on it now fits Ok on the case but the bezel was not very tight when pressing it down over the crystal. "perhaps is my vietnam bezel that don't is gen spec.. but my bezel MK3 (pic with stock plexi) is similar to the phong and MQ i think the same supplier" What I will probably end up doing is to find 2 or 3 crystals exactly alike that fit the '1655' case and then machine the ID of one of the bezels to be a good fit over the crystal. I have a couple Sternkreuz 28.9/30.2 but they were not as good a fit as the one I ended up using...but I only had one that fits and the bezel is not tight enough. Catch 22. I had a similar problem with a rolex 1003 (made first quarter 1964). I finished it in 2014...original cal 1560, Yuki 'explorer' dial, ST hands, generic #11 crystal (basically a 25-12 with rounded top edges), and a new smooth bezel from a 34mm 'tooter' case kit. Everything went Ok but when I checked it a couple years ago the crystal was 'crazed' with micro cracks all over it so I removed the bezel and put a new crystal on the case that I got later...2017 or 2018. No go. The bezel would not fit down over the new crystal without cracking the crystal. Same brand of crystal from the same supply house, same bezel. Q...What is going on? A...Even though the crystals are supposedly the same (packaging, brand, supply house etc) they came from different manufacturers or were made to a slightly different spec. Since I have 3 or 4 of the exact same #11 crystals, the best fix (for me) is to machine the bezel to fit. Otoh I would be sticking my neck out if I only had one crystal that would fit because I might not be able to find another one if needed. This has happened to me a few times on projects like this. Genuine parts generally fit fine but now they cost too much to experiment with. Catch 22 = a problematic situation for which the only solution is denied by a circumstance inherent in the problem. Merriam-Webster
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