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measuretwice last won the day on November 12

measuretwice had the most liked content!

About measuretwice

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  1. how to remover the rotor on an ETA 2452

    thanks for the comprehensive answer! Its really great getting help like this as no matter how many books and videos one takes in, its hard to find answers to such movement specific things. I do have a lathe but probably won't worry about this time as you're saying its not too bad. Also I have mainspring winders so am careful there. I like that at all the answers were clean as is - makes life easy Off to load the cleaner
  2. how to remover the rotor on an ETA 2452

    The watch is mostly disassembled. I didn't find any major issues so am hoping this one is a win (one of a pile of unknowns from a retired watchmaker) I have few more questions if I could ask for help on.... The cannon pinion friction fit is I assume between the copper coloured piece and shaft? Unlike others that are a tube pressed onto a tube, this looks like it has three sprung legs. How to remove? Gently press out with a staking tool? This assembly looks riveted together, is it supposed to come apart or run through the cleaner as is? These wheels are from the automatic winder. the square piece looks like it might be a nut? Not sure how they come apart, or even they do. Any ideas how to disassemble or run them through the cleaner as is? Lastly, the barrel and lid has some light scoring from the spring. Is this normal, should clean it up or just leave it? Thanks for any and all help
  3. how to remover the rotor on an ETA 2452

    thanks....can you comment on judging when the amount of end shake becomes a problem ? The rotor doesn't seem to interfere with anything.
  4. taking apart a Seiko 5Y23

    progress report...... You know what the difference is between a watchmaker who knows what he's doing and me? sore knees searching the tiled floor for parts. An that's with a bench with glass sides back and top and the pull out catch tray. Good news is I'm getting lots of practice and manual dexterity is improving. I usually find the part, but this time I managed to lose the rotor when it flew off . Being magnetic exacerbates the challenge, it could have stuck to so many things. This movement is out of production. I suppose these electronic watches are sort of a disposable consumer thing given the electronics will eventually fail, and with all the plastic they're not exactly inspiring....but hey, that one lonely jewel needed to be serviced and I'm a dog with a bone. As it turns out the yoke is just about rusted through. While Seiko forsakes you on the movement, the good news is both parts are still used in other watches (yoke and lost rotor) so they're available and on order. Hopefully I can make it work. The symptom of the watch was a jumpy second hand and not really keeping time. Turns out there were bits of metal stuck to the rotor, no doubt the missing chunks of the yoke. Interesting how the metal corroded in just that one spot which is an obvious stress riser. Stress does increase corrosion in steel so it seems a bit of a design flaw....the thin spring arm could have been wider through this section. Other than some crud from the battery, there was no other corrosion in the watch
  5. Adjusting Nut for Boley Leinen Lathe

    I'd try to find out what is factory and replicate that, I'll look at mine but I don't want to take it apart. I have enough machines in pieces strewn across my basement and garage lol. Making a nut like that is very easy for anyone with a machine shop, just make a drawing and get it made.....but first I'd want to know what about it isn't factory, and if it is factory, why it isn't working
  6. Others I've seen have a screw in the centre of the rotor....this one, I'm sure how to remove the rotor. It looks like this. Thanks! EDIT.....ok figured it out, 2 screws and the whole automatic winder comes out, rotor is screwed on from the bottom.....should have scratch head before asking
  7. what is the swing feature?
  8. A new lathe? looks good....I've got one, they are quite nice. Haven't had mine apart but believe the are the typical double cone bearing assembly.
  9. taking apart a Seiko 5Y23

    thanks guys....I do have the separate levers so will give that a go
  10. taking apart a Seiko 5Y23

    This watch stopped working and is dirty, I'm trying to disassemble and clean. It seems to me the brass in the centre has to come off - any suggestions on how to do so without making a mess of things? thanks
  11. Unknown Tool from Staking Set

    doesn't there have to be a hole in the black disk for its use as balloon chuck? Or were they sold this way and the user made the hole? It looks a lot like this, missing the centre bit....from an article on balloon chucks, Horological times june 2010.
  12. How do you dismantle a Horia tool?

    I would think there is merit to that. Achieving that sort of fit is a challenge in machining and tool making, of of the biggest. I've done it often enough when making fits for high end bearings, you have maybe a micron in each direction then its too tight or too loose (as defined by the bearing manufacturer). You have to hold your tongue just so when making parts like that. On that assembly, the tolerance are just so small, any bit of wear will make it too lose, any ding will make it too tight. Its not going to wear so quickly that you should never take it apart, and its construction is such that you have to disassemble to clean and oil. otoh I wouldn't do it daily; that precision fit cannot be damaged while its safely assembled.
  13. How do you dismantle a Horia tool?

    I started to blabber on about 99.9% of micrometer barrels are a very careful interference fit into the frame and I wouldn't try to remove it...when the brain says, "I think I have one of those". Yup, so I took it apart for you. Take the screw right out, its just a detent holding the barrel in the frame - you can see the dimple it sets in on the barrel. Put a block of wood underneath business end (anvil in micrometer parlance) and carefully screw the micrometer down into it. It will push the barrel out of the frame. The threads are very robust, much more so than a 40 tpi micrometer...after all its designed for pressing. It came out with minimal force, you won't hurt it apparently mine too needs a good cleaning....I wonder what might dissolve the grime without damaging the crinkle/wrinkle finished (that I wish I could do)
  14. How do you dismantle a Horia tool?

    which one? the jeweling tool? they make a lot of different tools.....
  15. best way to use oil cups

    thanks all, that's what I needed to know