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Ultimatety no exception to the cat , box and cyanide in quantum mechanics, OH and niel bohr are saying the same thing. 

All indications are MS dislodges from the barrel notch, however, if this presumption  turned out wrong, you will be the proud owner of a pair good of  barrel drums. the chance you don,t have ţo take.

There are approaches to safe removal of MS. 

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Well, after reading all your comments I thought let's try it, if I fail I just have to blame you.

So here are some pictures and a new video at the bottom.

Now somehow it got magnetized during the process (tested on a compass) so I'll make a short visit to a watchmaker around the corner.

 

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VIDEO:

https://youtu.be/soTyUE6Yhqs

 

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    • Just a note for those who come searching for information on this topic in the future.  I did eventually find the Mark's video on how to replace these springs, as someone observed, he does in fact make the replacement look easy.  (It actually is relatively easy once you have the knack of it.) If you're enrolled in one of Mark's online courses, the demonstration of how to replace this spring is in the Bonus Videos section of his course site, and is called "C2B1 – Sea-Gull Style Shock Springs".
    • If the metal was twice as thick, it wouldn't snap so easily.  The thickness is governed by the space available so you can't use thicker metal.  If you glued two pieces together, the likelihood of snapping would be reduced.  That's my theory anyway, could be wrong. 
    • there are various approaches to learning watch repair. A lot of people want to jump right in and every single watches something to be repaired restored. But other times like this it's disposable it's here for you to learn and when you're through learning you throw it away. yes you definitely should try this you have a learning movement you need to learn and the best way to learn is by doing something.
    • Sorry, the friction will be so great that the wheel will barely turn, if the movement will start at all, the amplitude will be verry lo.
    • If I can’t re-pivot the wheel, the logical thing to do is to descend the pivot hole.  Plan is to either stick a suitably sized hole jewel (from a barrel bridge or something) or fashion a blob of epoxy on the underside of the escape wheel cock so the wheel sits on its one pivot on the base plate and the staff with the broken off pivot (which I’ll polish as best as I can) becomes the upper pivot. As long as it doesn’t foul the 4th wheel it should work? I know it’s a bodge job, and if this were a rare movement, or belonged to someone else I would not do this. I’m just interested to see if I can get the thing to run. 
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