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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. 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/

Hi, I'm looking for some tips on how to best deal with removing battery corrosion from a plate. The plate below is from my father's Accutron 218. The battery failed and leaked at some point leaving a salt-like deposit that seems to be insoluble. I've tried an acid bath (vinegar), alkali bath (sodium bicarbonate), and good old fashioned elbow grease to no avail. At this point I'm thinking of just letting it be since it seems the plating is flaking off beneath and the corrosion shouldn't impact the function of the movement. If anyone knows about a magic bullet though I'd sure like to hear.

Hi Guys, I thought I'd put this up to help those with nasty rusted movements. The product is called Evapo-Rust, and it's a soak for rusted parts that removes rust without ANY scrubbing, and will not affect paint, plating and safe for all metals. http://www.evapo-rust.com/ Removes even heavy rust completely Non-toxic, non-corrosive, safe on skin No fumes or bad odors, non-flammable, no VOC's Biodegradable, water soluble Requires no special equipment ***Will not harm unrusted steel, safe on other metals*** Will not affect plastic, PVC, Viton and most paints I found this product through a vintage Radio/TV Restoration Channel on YouTube. Here's his review on this product ... he was extremely impressed by it. http://www.youtube.com/watch?v=b_C2OimE2YM I hope this is useful and makes those water damage repairs a little easier.