Elma Star, paper?
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By Michalzeszen · Posted
OK. Little panic, but I'm composed now. haha I need some support on this one, and you guys immediately noticed that. Thank you! To help us navigate the situation, I recorded a video of the case and crown: https://youtu.be/tfTLZrLiaqg?si=hIW8Jbmp1DPb9fZC The measuremen Yes, it does. There was water damage, and the two pieces (stem and crown) split up when I removed the crown. I didn't have a chance to see the assembled mechanism, but this eBay ad has the same assembly with adequate pictures. I'll try that. Quite afraid of breaking it, thought. -
Yes: Caseback provided a helpful thread which mentioned such a stake & discussed the risks involved in its use on roller tables. As well as adhesives, there was also mention of wedging e.g. with Al foil. As the watch is not mine I feel I must go for one of the latter approaches, reversibly. Thank you, again. Thank you. Cutting a new balance staff is way beyond my capabilities both in terms of technique & equipment. I think I shall explore the possibility of 'wedging' the table's tube onto the staff (arbour?) & resort to Thread Locker if this doesn't work. If it were my watch I would be tempted to risk the punch if only for the learning experience while hoping that my attempts to find a replacement balance are successful...... -
By LittleWatchShop · Posted
I installed a new crystal...a glass one. It was the last one of the set of three I had previously ordered. After he breaks this one, I will go with sapphire. This watch has an NH35A movement that runs like a beast!! His first crystal was completely shattered. The latter ones were cracked. Imagine all of that force and the watch still keeps excellent time. Truly amazing. -
Opinions vary on the use of the 3-sided stake/punch. You can find them in a lot of vintage staking sets. I have mixed feelings about it too. You are essentially marring the roller table, which could be considered "bad practice" (and is in fact considered as such by Henry B. Fried in his excellent book "the watch repairer's manual"). If your livelihood depends on the speed of your repair and you're not hurting the value of the piece, the use of this tool could be a "quick and dirty fix". There are however more elegant solutions and Fried mentions some. I've always opted to the balance staff with a suitable one. -
By nevenbekriev · Posted
OK, I insisted for the cock bending because now You have one problem less. Of course, I don't use calipers too. I proposed it just to give some kind of reference, which You were lacking before having tried. The truth is that if the pivots doesn't get out of the hole stones (the balance doesn't wobble) and the free play is more than 0 ( the staff is not pressed between end stones), then the end shake, no matter how big it is, will not affect free oscillations in both horizontal positions. Oiling itself will not reduce the oscillations. Now, if You have 150 osc. in both positions and the balance doesn't rub on center wheel, the watch will run and the initial problem of this thread will be solved. I am only concerned about the hairspring position adjusting, which is another rabbit hole...
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