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AndyHull

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Everything posted by AndyHull

  1. An HMT "Sandeep" joins me with a little light reading material by the fire today. The dial on this is particularly difficult to photograph. It is a rather pleasing bluish grey, but that doesn't really come across on the camera. Digital cameras for some reason seem to struggle with rendering blues accurately. This one is from 1995 which makes it one of the newest watches in the collection, and it actually still looks very fresh.
  2. A mid 1970s Baumgartner BF 844 based Ingersoll Sealion today.
  3. Are you sure you wouldn't settle for something a little cheaper smaller? https://www.ebay.co.uk/itm/Antique-Miniature-Long-Case-Grandfather-Clock-Wind-Up-Apprentice-Oak-Working/303786302973?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D225114%26meid%3D2398a7bed2864e30ba026c5087bd0779%26pid%3D100667%26rk%3D5%26rkt%3D8%26mehot%3Dnone%26sd%3D312747256878%26itm%3D303786302973%26pmt%3D0%26noa%3D1%26pg%3D2334524&_trksid=p2334524.c100667.m2042 It does have a little... err.. rustic charm.
  4. Almost certainly a variant of the Chinese Standard or Shanghai movements. https://17jewels.info/movements/s/shanghai/ These are extremely ubiquitous in Chinese watches, although there are a few other possibilities. https://en.wikipedia.org/wiki/Chinese_standard_movement They can be quite well put together and run well... but there are also some pretty terrible versions too.
  5. Keeping warm by the fireside tonight while a Baltic wind howls past the chimney, so what better than a little bit of Russian company. No, not the high octane fighting potato juice, just a bit of submarine themed Vostok 'Komandirskie'.
  6. A curious little Chinese number. Needless to say it easily made it into the club.
  7. Try plating the end you want to solder with copper. Making small quantity of copper acetate using white vinegar is pretty easy. You could also use copper sulphate. Solfering to copper should be easy.
  8. With a glow brighter than a Chernobyl sunset, this £2 on ebay "Limit 1912" Miyota quartz received a little first aid and a quick polish this afternoon.
  9. Do we know the dimensions and gauge of the original wire? Given that it is relatively short, might nichrome heating wire of a suitable gauge do the trick? Nichrome wire tends to be fairly springy, although it does have a higher resistance than copper or steel. The dimensions suggest this is probably not an issue in this case. It is also fairly hard wearing. Depending on the type of wire you try, you may need to copper, or nickel plate the end of the wire you are soldering before you can solder it with off the shelf "electronics" multicore soft solder. Steel wire tends to fall in
  10. That is also a good suggestion. It would avoid the moisture of water based PVA, which might be undesirable in this application.
  11. I agree. Enamels can be very prone to micro cracking. The same is true of a lot of ceramic components in the electonics field. If you can, avoid heating ceramic parts unless they are specifically designed to be heated. Glass and glasswear can be annealed, and this is typically how the heat stress is removed from enamelled dials when they are fabricated. The rear of the dial is enamelled first. The use of enamel on the rear avoids the substrate flexing uneavenly when the dial side is decorated and the dial side enamel is fired, and allowed to cool. Once the initial cooling h
  12. PVA would be a good modern choice. Easy to use. Easy to remove. Semi- flexible, and a relatively long working time to allow careful re-positioning. My observation from trying it as a filler on cracked dials is that you should clean things carefully first, as the water base will allow copper salts to dissolve and could cause a bluish green edge to appear around the repair. So I would suggest, clean first with a cotton bud and a little white vinegar followed by a clean with fresh water (distilled if you have a lot of minerals in your supply) and a little dish soap. Dry carefully. Then a
  13. That glue is Interesting stuff. Given the age of the piece, there are limited choices. Possibly a latex based gum, which would be a reasonable choice to avoid cracking of the enamel. Good old fashioned chewing gum therefore is not such a daft suggestion as it was traditionally made from a whole bunch of different natural gums, including latex. https://en.wikipedia.org/wiki/Chewing_gum#Gum_base Chewing gum takes quite while to set though as anybody who has ever encountered it on a school desk or cinema seat can testify. Possibly even something as simple as linseed putty (window p
  14. Can you take some good hi res pictures of them too. Particularly the snoopy ones. It may be possible to make copies.
  15. Don't tell anybody I showed you this. Its probably classified.
  16. True, from the dial side, but what was the dose through the case? What was the dose through the crystal? Mostly Radium throws out Alpha and Beta radiation, so most of that isn't going anywhere. https://en.wikipedia.org/wiki/Isotopes_of_radium#Radium-226 Some of the gamma will get out. Dust is the real hazard. Take care when dealing with that.
  17. 1 million years = 31556952000000 seconds (3.155 x 10^13 seconds) https://en.wikipedia.org/wiki/List_of_radioactive_nuclides_by_half-life Radium 226 has a half life of 50x10^9 seconds or around 1,600 years .. so 1 million years will probably make the lume on those hands safe enough to spread on your toast. Having said that, the radioactivity is relatively low level, so providing you don't actually intend spreading the lume on your toast, and it will remain in the watch, and that the watch is not worn daily, for may years, then its probably not worth worrying about. Most of t
  18. Just for fun I picked up a gieger counter kit from ebay a couple of months back. https://www.ebay.co.uk/itm/Geiger-kit-DIY-Arduino-IDE-compatible-easy-nuclear-radiation-counter-w-o-tube/153986465695?ssPageName=STRK%3AMEBIDX%3AIT&var=454085217095&_trksid=p2057872.m2749.l2649 Its been sitting waiting for a spare moment to put it together, so this evening I grabbed it and assembled the thing, which took me less than an hour. I do however have quite a lot of experience of electronic repairs and soldering, so I found it pretty simple. Your mileage may vary. I'll complet
  19. Initially I had it on a fairly boring tan leather strap, which sort of worked with the red, but then I grabbed this midnight blue one with red stitching. It actually echoes my ThinkPad laptop's styling pretty closely too. I'll leave you to decide if Timex were ahead of their time, or Lenovo are harking back to a different era.
  20. Timex Tuesday again for me. This time a 1973 Marlin with a great 70s vibe.
  21. Another novelty watch for the 404 club. A Fero with a rather odd exhibition case back, and palm tree motif dial. Listed as not working, and with the regulator suspiciously pushed to one side, I suspect this may need a bit of attention. I may also need to resort to some serious metal bashing skills to sort out that 1960s stainless band too, although that is almost certainly not original.
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