Jump to content

Purest Green!

Waggy
 Share

Recommended Posts

Waggy Distinguished Member

Waggy

Posted
Posted (edited)

d9d40bcde1872e218df86d4115ad35d7--blackadder-quotes-british-humour.jpg.825c3d440520bac9e5eaf8dd7fd6f37f.jpg

I'm interested to see if anyone has any insight into the hard crystalline green corrosion (?) that you often see in watches. It seems particularly prevalent on rotors, see below on the watch I recently did.

2023-07-30-18-44-03-817.thumb.jpg.27793893f883f95426d4e81a07598a62.jpg

From the quick search I did I am reasonably sure it is brass corrosion product, can anyone confirm? But very interested if anyone has a good way to remove it other than using abrasives?

I tried rust remover but didn't seem to do anything, and also put it in the ultrasonic with my usual detergent, again this didn't move it. I also ran through the watch cleaner with my 'home brew 111' ammoniated cleaning solution, but all to no avail. In the end I resorted to using wet and dry paper... is there a better non-abrasive (or less abrasive) solution... how do you deal with it?

Just found these home remedies, anyone tried these or have other solutions?

https://blog.thepipingmart.com/metals/how-to-remove-green-oxidation-from-brass-a-complete-guide/

Edited by Waggy
Typo
Link to comment
Share on other sites
  • 1 month later...
Razz WRT Addict

Razz

Posted
Posted (edited)

Looks like verdigris. In the coin collecting world a product called veridicare available fron Wizards coin supply. It is somewhat expensive but removes verdigris without a trace if it is not too far along. Very good on US cents and vintage copper pennies. In the coin collecting world condition is everything and any trace cleaning destroys a coin's collecting value so this is one product that could work more to watches that don't have to have untouched surfaces to remain valuable.

Edited by Razz
Typo fixed
  • Like 2
Link to comment
Share on other sites

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.

×
 Share
Go to topic listing


  • Similar Content

  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • Hawaiikook808
      Seitz Tool - Help determine if Seitz or not

      By Hawaiikook808 · Posted

      Thanks, ManSkirtBrew.  I started looking for a setup like yours and ran across this.  It was about half the price of the JKA Feintaster (depending on what auction you were in), and it's a Bergeon.  I bought it because I thought the price was fair (eBay - Buy it now), and I'm a sucker for vintage tools. It also has a table, so it should be easy to use for measuring jewels. I wonder if the the contact points can be changed out. Bergeon seems to manufacture new tables and accessories for the contemporary dial version. What do you guys think of it? I'm sorry this post seems to have taken a detour. I'm new here so let me know if I should start a new topic.
    • nevenbekriev
      Winding pinion making

      By nevenbekriev · Posted

      This is a flying cutter, usual one. The cutter itself is shown in the pictures in the first message, it is made of broken tungsten carbide drill bit. I asure that all the angles of the cutter are as they should be. I have video - little older one - that I made when onse making the same kind of winding pinion for a Poljot 2200, which is even smaller than this one. It is not easy to see in the video, but the tool rest moves about 1mm towards the object in Y direction and then returns back untill cutter is rotating. Then the spindle is rotated one tooth ahead and everything repeated untill all teeth are cut.
    • Trav2004
      Help Identifying movement

      By Trav2004 · Posted

      After a bit further research could it possibly be an AS 970?
    • Bonefixer
      FHF70 balance jewels settings

      By Bonefixer · Posted

      Latest project was a non-running ebay purchase with an FHF70 movement. I stripped and cleaned it, reassembled it, and got it running. So far so good, nothing damaged AFAIK.  I was oiling the top jewel on the balance (the one in the cock) which was a slightly unusual shock setting. I removed the spring (3 leaves) which was part of a chaton holding the cap jewel. This left the hole jewel behind which I retrieved with rodico and then lost it. I was taking it off the rodico, very gently as I thought, with tweezers, and then it just disappeared.  Fast forward a week, I got a donor movement, non-running, with the plan to just take the shock jewel that I’d lost. It was the same movement but had standard incabloc settings, and was steel rather than copper/brass.  I changed the cock and balance complete and it ran, not very well. I switched the lower jewel setting, cleaned and oiled both jewels and the replacement balance. Without the pallet fork the balance swings very nicely with a puff of air. With the fork in place, balance out, it flicks side to side nicely with power in the mainspring.  Put them together and it doesn’t run. The impulse jewel sits in the fork and it stops.      Any suggestions how I proceed? In case you didn’t follow that I have 2 FHF70 movements, nothing broken as far as I can tell, but mixing up the balance wheels and jewel settings results in a non runner. 
    • Neverenoughwatches
      Part swapper to part maker

      By Neverenoughwatches · Posted

      Oh and this almost perfect third wheel pivot and slightly set mainspring  Ah ok yes i see what you mean, good idea. I'll try that if i fluff this one up. The image isn't great quality but i like the idea though.
×
×
  • Create New...