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margolisd

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margolisd last won the day on October 17

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  1. margolisd

    Pierce 134 Help

    Yes, I came across that too and I did experiment with it. I found the plastic to be too thin causing the springs to obstruct the clutch parts
  2. margolisd

    Pierce 134 Help

    Thank you for such a great description. That's much clearer. In terms of the rubber washer I'm trying some of this nifty stuff - https://sugru.com. What would you use?
  3. Wow I had no idea one-dip was that dangerous. Doing a bit of research on tetrachloroethane confirms it. This is from an ATSDR Public Health Statement: "An increase in liver tumors was observed in mice following oral exposure. The EPA determined that 1,1,2,2-tetrachloroethane is a possible human carcinogen. The International Agency for Research on Cancer (IARC) determined that 1,1,2,2-tetrachloroethane is not classifiable as to human carcinogenicity." I think I might get rid of mine. Nasty stuff indeed.
  4. The mainplate and bridges can just sit in the large plastic basket the cleaner comes with. All the small parts can fit in two or three of the small metal baskets I linked to
  5. margolisd

    Pierce 134 Help

    Does anyone have any experience repairing Pierce 134 movements? It has an unusual vertical clutch system. Having replaced the rubber clutch I'm almost there with it but having problems fine tuning it. Going by this I understand the clutch should float between springs J and K. But I'm not sure which spring goes underneath the clutch (ie closest to the dial) and which spring goes above the clutch. Anyone know?
  6. I use a couple of these. One for clean and the other for rinse... https://www.amazon.co.uk/James-Products-Ultrasonic-Jewellery-Spectacle/dp/B00N4XB5YU/ref=sr_1_4?ie=UTF8&qid=1541761920&sr=8-4&keywords=ultrasonic+cleaner I use this cleaning solution: https://www.cousinsuk.com/product/elma-wf-pro-cleaner And this for rinse: https://www.cousinsuk.com/product/elma-suprol-rinse For pallet fork and balance wheel I use Bergeon one-dip to avoid damaging the shellac. These baskets are great for small parts: https://www.amazon.co.uk/gp/product/B01819HN24/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1 So far I've had really good results even on some very dirty old watches.
  7. margolisd

    Re-jewel or resize pivots?

    I guess if you put these in order of risk from least to most then it's 1 - Find the correct staff. 2 - Replace the jewels. 3 - Modify the staff But then again, as a learner, I like to challenge myself to take the more risky option in order to gain experience. But of course that can be an expensive choice.
  8. margolisd

    Jacot Tool Questions

    Arg! I'm so confused. I've found an online calculator that confirms your conversions. But look...
  9. margolisd

    Jacot Tool Questions

    Turns out it is Douziemes. But I'm not sure if your conversion is correct. I think 8 is 0.5 rather than 1.5. Thanks for all your help btw!
  10. margolisd

    Jacot Tool Questions

    Ah I see. In the video Old Hippy posted the wheel is clasped. So I guess with this tool when you change direction there is a pause as the driving dog finds the spoke on the other side of the wheel. I thought I'd had it set up wrong.
  11. margolisd

    Jacot Tool Questions

    Ah. Actually the scale on the left is metric. But I think you're correct about the scale on the right showing which drum notch to use. Mystery solved. Now if I could just attache a balance wheel to the thing. I still can figure out how the "snake tooth" secures it. Thanks Old Hippy for the YouTube link. I had actually watched that one and it's super helpful. Although he doesn't demonstrate on a balance wheel which I understand should have rounded pivot ends. That seems to be a real skill which is going to require a lot of practice.
  12. Hi folks. I just got a Jacot tool from eBay. I'm working through Practical Watch Adjusting by Donald de Carle which has been a brilliant guide. Just a couple of things I'm not sure on. First, can anyone explain the scale on the pivot measuring tool? Why are the numbers on the left and right side different? I don't see how they relate. Also, can anyone explain how to secure the work piece to the tool? The ones I've seen on YouTube have two "snake teeth" that clasp the wheel but this only has one. I can't see how it can hold anything securely. Thanks all.
  13. Yes, that is something I've experimented with actually. For me putting the spring on a clean white sheet of paper helps. The other thing that's confusing manipulating a spiral shape is the fact your correction will change the gap between the spot you're working on and the coil further out but the gap further in will always stay the same! And several times I've reversed that in my head and wondered why my corrections are making the thing worse
  14. There are some great videos showing the process. Which is essentially to grip the spring with a fine pair of tweezers close to the bend. And then very gently "stroke" the hair spring with a second tweezer opposite to the way it bends. I guess YouTube is blocked in Iran? Can't you use a VPN?
  15. I just thought I'd share this as it may be useful for another learner. By far the most difficult thing I've come across starting out in watch repair has been correcting bends in hairsprings. I've got the right tools, the right light, a powerful eye glass and a pile of scrap watches I've been practicing on. But I found time after time I was just making the hairsprings worse. I think part of my problem is that I'm slightly dyslexic and I find looking at the spiral really confusing sometimes. But I had a bit of break through last weekend which has dramatically improved my technique. Quite simply, I hold my eye glass up to my iPhone lens and take a close up picture of the hair spring. I then make a cup of tea and sit and look at the photo, zoom right the way in and really think about what I'm going to do. This is so much more effective than hunching over the hairspring and straining my eyes for long periods and losing patience. Once I've really thought about what I'm going to do, I go back to the hairspring with a clear strategy, ie, slight bend in, fourth from the centre at 3 o'clock. I apply the bend, take another picture and repeat. I know it sounds simple, but it's been a huge help to me and I'm finally having success
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