Jump to content

Recommended Posts

Posted

I am new but not so new.. Just finished taking an intro course in watch repair.  did pretty good.. Completed repair of a Fossil Watch. Question what is the best method of cleaning ....  I have purchased several Swiss army watches for practicing on how to clean and repair as well as open the case  back.. they are not new... I purchased 2 mechanical watches A 1951 vintage Bulova; Girard perregaux vintage watch, don't know if either are authentic Help!

Posted

It depends on your budget.  A dedicated watch cleaning machine in my opinion is the best. If on a budget an ultrasonic cleaner works really well.

You can clean all the parts by hand but it takes a long time and is not as effective as the ultrasonic.

All of these methods require the watch to be dismantled cleaned re-assembled,lubricated & then regulated.

  • Like 1
  • 2 weeks later...
Posted

Hello HB50 and welcome,

 

I agree with Clockboy about the budget etc.  I am a hobbyist and tinkerer not doing a great many watches so I have not invested in a full scale cleaning machine and have opted for the Ultrasonic.  If you get one with a decent sized bath (mine cost about £16 at Lidl) then you can put small lidded jars (I use the tiny jam jars) containing cleaning and rinsing fluids into the bath just using water as the conductive medium.

 

There is a lot of discussion about fluids and it comes down to personal preference I use Naptha (lighter fluid - 100% Naptha only, check the side of the can) to clean and Isopropanol 99.9% pure to rinse  (I tend not to put the pallet in just in case the stones get loosened ).  Other fluids for rinsing can be used of course but try to use stuff that leaves no residue. One test is to put a drop on a bit of clean glass and allow it to evaporate if there is a residue left behind ditch it.  I know you have completed a course so you may already know to take a pic before you remove each bit  - it makes life so much easier later.

 

Hopefully the watches you have bought are ok but if you post pics I am sure the members will help out with movement types etc.

 

Cheers,

 

Vic

  • Like 1

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Content

  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Very interesting! I answered the mail from Longines, explaining that I was a bit disappointed and that I wouldn't ask for a costly confirmation for a watch which isn't a high-end one ... and I received another email explaining that they couldn't not certify the authenticity of the watch, but they could specify that, according to the serial number on the caliber and to their handwritten records, the watch was produced in 1938. Great! @Mercurial I will take the measurements and will keep you informed. Thank you all. This forum is incredible 👍
    • Good stuff, thanks!!!  I'm going to save it and re-read your post and watch the video again.  I have a few follow-up question:  My understanding is that the spring vibrates or breathes between the the two regulator pins. When the pins are fully open the effective spring length is from the stud and theoretically no rate adjustment can be made by moving the regulator arm. As the pins are closed the spring gets closer to one side of the regulator block but doesn't touch a pin. You can still move the regulator carrier the entire terminal curve without upsetting the coils.  The rate can now be adjusted using the regulator because the effective spring length can be modified.  My question is: Does the hairspring bounce off and touch one of the pins as it breathes? Is that why the effective hairspring length is adjusted by moving the regulator?  And follow-up: How is amplitude affected by the spring between the pins? Does fully open pins, dial up position = max amplitude?  When spring adjusted to 1/2 width still = max amplitude? When I have crown down gravity is pulling the spring against one of the pins and I would expect rate to go up and amplitude to go down. Is that correct?
    • A quick Google for Longines 25.17 found several similar watches - like this one with writing on the case back similar to yours https://benjaminmarcello.nl/product/longines-cal-25-17-tank-from-1938/
    • Apps like Watch Accuracy Meter can be inaccurate, and will read some watches better than others.  What daily rate does Watch Accuracy Meter give you if you check the Longines once it’s been running for 24 hours? Best Regards, Mark
×
×
  • Create New...