What is this stuff on the bell?

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Jim2195
Posts: 24
Joined: Sep 18, 2019

by Jim2195 » (edited 2023-09-03 6:45 p.m.)

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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greenbean
Posts: 1958
Joined: Mar 23, 2018

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.
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hornbuilder
Posts: 1384
Joined: May 02, 2018

by hornbuilder »

<EMOJI seq="1f446" tseq="1f446">👆</EMOJI> what he said
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Jim2195
Posts: 24
Joined: Sep 18, 2019

by Jim2195 »

[quote="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.[/quote]

Thanks! I’ll see if I can get ahold of the products you mentioned and try them out.