I am correcting a deformed hairspring and need to set the curve for the regulator pins. De Carle mentions using curve-forming tweezers, which I cannot yet find. What are the alternate practices for forming this curved portion of the over curve?
Hi again all,
since there are some really knowledgeable people here I hope you can impart some wisdom regarding repairing a bent hair spring. after getting this old movement working again with the help of this group (new mainspring), I need a little more advice.
after hooking this beaut up to watch-a-scope it shows low amplitude and very erratic trace. I can see the hairspring is bent and need to start here in addressing the issue.
What tools are needed (not willing to spend £50 on hairspring levers at the moment)? I have basic tools (enough to service a movement), but what are the essentials for working on a hairspring? i.e for removing from a balance safely what tweezers types/sizes are recommended for correction etc.
Also, is there an easy way to identify and obtain replacement hairsprings? I assume they are very interchangeable as it would not have been easy to make new hairsprings for every watch model.
Question for those who work on Vintage Timex watches:
I've restored several Timex pieces from the late '60s to the late '70s. The technique I learned (from Internet posts and tutorials) say to simply loosen the dial-side balance pivot by unscrewing it 1/2 turn prior to cleaning the entire movement in an ultrasonic cleaner. This method contradicts the official Timex service manuals, which state that the balance should be removed, cleaned separately and reinstalled. Thus preventing the hairspring form being damaged in the ultrasonic cleaner.
My experience is this:
Leaving the balance in place (slightly loosened) is much easier and will work on the standard movements used in the '70s (M24/25, M32/33, M104, etc.) Attempting the same method on movements from the '50s and '60s (M22, M29, etc) will result in a kinked hairspring that is damn near impossible to un-kink. So my question is this:
What do you experienced Timex restoration experts recommend? Leave the balance/hairspring in the movement for cleaning, or take it out to soak in a separate jar?
Is the potential for hairspring damage greater when removing/reinstalling the balance - in comparison to leaving it in place?
I've messed up a couple of vintage movements that I really wish I hadn't. I don't want to make those mistakes again.
Thanks for any insights!
I recently had the pleasure of finding a damaged hairspring needing care. My first! It’s an inexpensive orient watch, gaining 20 minutes a day. I am taking Mark’s fault finding course, and have other inexpensive hairsprings to practise with. I also got some vintage tools I’d love to use. Until now for me levellers were only the Oliver Cromwell people, but ebay never ceases to surprise...
I could pass the first stages of correcting the coil, with two tweezers. But could not find a use for the vintage tools. Could you help me to figure it out?
Picture 1 is the bent hairspring
picture 2 and 3 the box of tas levellers
picture 4 is the hairspring suffering under my tweezers now
picture 5 shows the tip of the tools
picture 6: from De Carle. Would this be the purpose of the levellers? The overcoil?
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Hello Rexxus. i too started on pocket watches and started winding by hand. i understand most professionals, of which I am NOT one, consider it bad practice. However, what works, works! i stopped doing it by hand simply because it hurt my fingers to do so and I had been slapped in the face 137 times too often by particularly cheeky springs. I bought the model in you picture years ago and love it. There are two main drawbacks IMHO. 1. As nickelsilver suggests, the older ones tend to be work, particularly in the material that grips the spring in the center. Thus it can slip quite often. 2. This model nay has one arbor size. That means if you work on smaller movements with smaller springs, you may bend the center out of shape or even break it. In the case of wrist watches and smaller sprinted movements, it won’t fit at all. you can buy new winders one arbor at a time and build your set to your needs. They are a bit more expensive per arbor than a set, but if you don’t need a complete set, you save money and get the right tool. I must admit to coveting Marks Bergeon set in his videos even though I will NEVER need all those sizes. best of luck and do reach out with pocket watch questions and suggestions. I love to compare experiences.
You need to sort this out, it is too far away from the collet, try to remove the kinks. This is the type of tweezers. Dumont® 00 Carbon Steel Polished Tweezers To Curve Breguet Hairsprings