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No damage. Synthetic rubber (without entering the specific material which can vary) with which the gaskets are made is similar to the ones in the o-rings of a car engine. And these take hot oil, gas and their vapors for hours every day for years.

When i first started to repair/service clocks I also wound by hand. However I had a few mishaps & also found it difficult to wind without distorting the spring. Therefore I purchased a spring winder.

No--Not necessarily, but the drag from a thicker oil on a small calibre (with correspondingly smaller mainsprings and torque) can in some cases, cause issues...

I noticed when in LA visiting my son that the watch size that was being worn tended towards the enormous. It is of course just personal preference but it seems like a trend. Some seemed so large as to be bordering on the ridiculous though. It was not possible to identify most in passing and I suspect there were a lot of Quartz watches and the other thing I noticed was they mostly seemed to be black. I don't really have any strong opinion about what a person wants to wear. I remember my son saying my Omega Bumper looked like a ladies watch as it was so small but I personally prefer it to the extra large stuff. i do have a treasured Quartz Tissot that my mother gave me and which was one of the reasons I ended up in this forum when I had to replace the movement. My largest regularly worn watch is a Glycine Airman SST "Pumpkin" Cheers, Vic

An Accutron tuning-fork Always has the positive terminal (main case of battery) Downwards in the movement--giving the impression its wrong way round, they certainly Wont run with the batt reversed--In fact a reversed batt can do damage to the 0.22uF Tantalum cap in the circuit, if its left in the wrong way for some time, a PITA to change on a 218x calibre- In fact, Most things are a PITA with a 218!... Only the Accutron Spaceview that Citizen re-issued and made 1000 of as an Anniversary watch in 2010 has the batt in conventional orientation--with the pos uppermost......

Hi Eric, You should also read this... http://www.nawcc-index.net/Articles/BTI-The_Practical_Lubrication_of_Clocks_and_Watches.pdf S

You are exactly right swordfish. Staff pivots can act sometime, you can abuse them and they take it, but sometime align things the best you can, and just present the bridge screws and they break. That's one reason why I think insisting in servicing mech. watches every 5 years is kind of crazy. Before or after something breaks because of manipulation.

You make a good point, StuartBaker104. I see now that the pivot is broken, not merely worn. But why THAT pivot, eh? My working hypothesis now is the one you suggest, that I broke an already faulty pivot. I'll carefully inspect its jewel to make sure that the broken fragment isn't there. I have ordered a replacement part from a US supplier. This reminds me of a case (patient, not watch case) I saw many years ago. A man had some aching in his humerus (upper arm bone) from undiagnosed myeloma (bone cancer). When he opened his refrigerator door, he heard a snapping sound coming from his arm. The mere force of opening the door had broken the already weakened humerus! He then came under my care. Alas, although watches are often difficult to cure, humans are more so. Sent from my iPad using Tapatalk

water resistant 100ft? even its namesake can't do that! This is so much better.. cheers

That is a unimat 3 PC . One which you can attach to a computer . There are lots of parts for it on Ebay. I recommend new o-rings for the drive pulleys. I have a ordinary Unimat 3 which i bought back in the 80' . Still working good. There are a lot of parts available for it? Like collets chuck and tool rest .