Are those spots from [salty] sweat?
When I was a teenager I used Brasso (not recommended) on my cymbals (they'd turn green in the ocean/beach air where I lived). It's definitely abrasive, and removes both tarnished and untarnished brass, leaving swirls/scratches on the cymbals.Seems like I'd need something abrasive and that might make it look worse.
There is some discussion about this on another DW thread:
https://www.drummerworld.com/forums/index.php?threads/marks-on-cymbals.168859/
When I was a teenager I used Brasso on my cymbals (they'd turn green in the ocean/beach air where I lived). It's definitely abrasive, and removes both tarnished and untarnished brass, leaving swirls/scratches on the cymbals.
In your case, I'd leave it alone. Try not to obsess over it (easier said than done).
If you are in a military group with brass belt buckles, Brasso is ok for cleaning, but please don't use it on cymbals.I do have some Brasso as well which I might try if Bar Keepers Friend doesn't work.
Those kinds of spots are usually the result of sweat droplets remaining on the cymbal for long enough to eat through the clear coat and tarnish the bronze.
If you do decide to clean/polish off the spots make sure you re-clear coat the cymbal or they'll come back. I've used both Bar Keeper's Friend (paste) and Zildjian cymbal polish. I'd avoid Brasso...it doesn't work great, and can cause more problems than it's worth.
No matter what you use, make sure the cymbal is really, really clean with several rounds of soap and water afterward. And then re-clear coat the cymbal to prevent it from turning green again.
If you rub BKF on one area more than the rest of the cymbal you will leave a “polished” area that won’t away until the cymbal gets it’s patina back. Technically it never goes away, it just gets camouflaged . If you clear coat it, it will be there."How to remove them? I use Bar Keepers Friend. Clean the entire cymbal first, then go back over the spots as many times as needed. NOTE: clean only with the lathing lines, not acoss. Rinse well, then dry. Any abrasive marks left by the BKF will quickly go away".
My first thought.Are those spots from [salty] sweat?
I agree with @bongoman. Military brass accouterments all had a very thin lacquer coating - all our brass stayed nice and shiny and only needed an occasional wipe with a soft cloth. Sadly, (fiendishly?) the drill sergeants knew this and required us to polish off all the lacquer, which resulted in tarnished brass in a few weeks. After basic training, I eventually replaced all my brass accouterments with gold plated versions.Many modern brass and bronze instruments have that clear coat from the factory, even if they look like just shiny new metal. And if a tiny pinprick gets nicked in the clear coat, even invisibly, then oxygen and hydrogen can get in, and make visible spots under the clear coat. That’s why a light polish won’t get rid of them—and why putting more elbow or abrasive into it makes your metal look uneven, discolored, and more likely to get tarnished further.