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mbhorology

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About mbhorology

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  1. mbhorology

    Dial resilvering

    Thanks for replies. I'll certainly post pictures before, after and during the process which may help others in the future.
  2. mbhorology

    Dial resilvering

    Yes it would be for a longcase clock dial. This is the tick in the box I'm hoping to achieve at least for by BHI work. As a sideline I'd also like to experiment with etching my own dials and silvering them too. Maybe starting with a large calibre watch (6497).
  3. mbhorology

    Dial resilvering

    For my BHI Record of Repairs one of the operations I need to carry out is re-silvering a dial. I've seen this kit from cousins and wondered if this contains everything I need to try this process out? https://www.cousinsuk.com/product/dial-silvering-kit?code=S1526 I understand that I'll need very fine abrasives to remove the old silvering back to the original brass, then use the items in this kit. Thanks
  4. mbhorology

    6497 dial foot size

    Thanks - I've found you can get an assortment of sizes from Cousins so I'll reply to confirm. Useful if someone searches for this in the future.
  5. mbhorology

    6497 dial foot size

    I'm going to purchase a Seagull ST36 movement (6497 clone) and wondered if anyone known what size dial foot (diameter) this movement uses? Im going to make my own dial so just after the size so I can get the right ones alongside the movement. Thanks Mark
  6. mbhorology

    Lathe motor size

    A picture is indeed worth 1000 words; yes this helps. Thanks again.
  7. mbhorology

    Lathe motor size

    Thanks that helps. I've looked at Unimat 3 motors and they are rated at about 100 Watts. I was looking at the spec of a 4pole 3phase motor of a similar rating and with a speed controller I'd be able to get between 130 and 2000 rpm. Does that feel correct? The alternative is a 2pole motor but the speed range would be between 300 and 4000 rpm which feels too fast.
  8. I have recently acquired a Lorch LL instrument maker's lathe for which I need to source a motor. I am planning on using a 3 Phase motor so that I can use a VFD inverter and hence be able to control the motor speed. https://drive.google.com/file/d/1yoLJcPEZeQh8ueS-70Qw4jPmdtadtdf4EA/view?usp=sharing My question is, what size of motor do people typically use on these small lathes? It is a little bigger than a watch makers lathe with 65mm centre height. It uses 10mm collets. The lathe will be used in a clock repair workshop. Thanks
  9. mbhorology

    soft solder for repairing recoil escapement

    Well I just wanted to feed back on this now I've changed my flux and solder. I have obtained some "Bakers Fluid No 3" and 60/40 tin/lead solder. I found that applying flux, holding together, then applying solder wasn't successful like you might do with silver soldering. I did however find that tinning both surfaces first (having cleaned as suggested above) and then soldering together resulted in a good joint that when cleaned up didn't show any join.
  10. mbhorology

    soft solder for repairing recoil escapement

    Thanks all for the replies (with small misunderstanding in the middle). I think my lead free solder isn't helping matters here so I'll go lead/tin solder and the flux suggested above. I'll see what my local ironmonger has in stock.
  11. mbhorology

    soft solder for repairing recoil escapement

    Michael, thanks for the reply. I've had a quick look around and wondered if Bakers Fluid is the thing I need: https://www.rapidonline.com/bakers-no-3-soldering-fluid-125ml-84-2351
  12. What is the correct solder and flux to use for refacing a recoil escapement with an offcut of mainspring? As an experiment I've tried soft soldering using plumbers Plowerflow and lead-free solder with brass and that is fine, however the results on steel are hopeless; the solder just doesn't flow. I believe you are supposed to use a tin/lead solder, but I'm not sure on what flux you should use.
  13. mbhorology

    Watchmakers lathe collets

    Interesting and good info. Do you happen to know if they were referring to the collets which come with their lathe package https://www.ebay.com/itm/New-Unused-Mini-Precision-Watchmaker-Lathe/282991424601?hash=item41e39a7459:g:9WAAAOSwM0FXIAbV or did they refer to these which are available separately https://www.ebay.com/itm/77-Pieces-Collets-for-8MM-for-Watchmakers-Lathe/401089759992?hash=item5d62d00af8:g:-ggAAOSwZ8ZW6fio Thanks
  14. mbhorology

    Watchmakers lathe collets

    Just wondering if you made any progress on this? I'm also considering the Chinese collets from Sincere Tools on eBay, so would be interested if anyone has experience of these?
  15. mbhorology

    Ultrasonic Cleaners

    Thanks for all the replies. Some good advice about cleaning antique brass here which I'm well aware about and the use of amonioniated cleaning solutions. Conservation is always a hot topic but for 20th century brass made of rolled brass the brutal cleaning methods are fine. Back to the ultrasonic cleaners it feels like these Chinese units are good for occasional use and only for short periods of time which probably suits my initial use anyway. If you happen to burn out the ultrasonic element can you get a replacement or is the unit a throwaway item which parts are not available. My other option is to purchase a higher quality unit. Can anyone suggest a fairly priced unit? Elma is an option I can see but they do cost 7 times the price of the Chinese unit!
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