What is this stuff on the bell?

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Jim2195
Posts: 18
Joined: Wed Sep 18, 2019 7:02 pm
Location: Los Angeles, CA

What is this stuff on the bell?

Post by Jim2195 »

I’ve noticed multiple “rusty” splotches amidst the scratches on my trombone. I have no clue what this stuff is, as it doesn’t look like typical lacquer wear to me. Additionally, is there a way to remove it? Thanks in advance to anyone who has answers!
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Last edited by Jim2195 on Sun Sep 03, 2023 4:45 pm, edited 1 time in total.
- Jim :pant:
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greenbean
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Joined: Fri Mar 23, 2018 6:14 pm
Location: San Francisco

Re: What is this stuff on the bell?

Post by greenbean »

I think you are looking at areas that have lost lacquer due to dent removal. The raw brass then corroded a nice red color. Pretty much harmless corrosion - not "red rot." It can be removed easily. I have used Bon Ami or Bar Keepers Friend, and I imagine brass polish would work.
Tom in San Francisco
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Bach Corp 16M
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hornbuilder
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Joined: Wed May 02, 2018 9:20 pm

Re: What is this stuff on the bell?

Post by hornbuilder »

👆 what he said
Matthew Walker
Owner/Craftsman, M&W Custom Trombones, LLC, Jackson, Wisconsin.
Former Bass Trombonist, Opera Australia, 1991-2006
Jim2195
Posts: 18
Joined: Wed Sep 18, 2019 7:02 pm
Location: Los Angeles, CA

Re: What is this stuff on the bell?

Post by Jim2195 »

greenbean wrote: Tue Dec 20, 2022 5:25 pm I think you are looking at areas that have lost lacquer due to dent removal. The raw brass then corroded a nice red color. Pretty much harmless corrosion - not "red rot." It can be removed easily. I have used Bon Ami or Bar Keepers Friend, and I imagine brass polish would work.
Thanks! I’ll see if I can get ahold of the products you mentioned and try them out.
- Jim :pant:
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