Preserving raw brass

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Kingfan
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Preserving raw brass

Post by Kingfan » Thu Nov 28, 2019 10:00 am

My TR180 had red oxidation on the parts of the surface of the bell and tubing. I carefully cleaned it off. I'm happy to say it wasn't full blown red rot, it was just on the surface only. It still isn't a pretty horn, just less ugly... OK, now what? Car wax, spray furniture polish, a spray can of clear lacquer, Sherwin-Williams exterior latex? Just kidding on the last one!
I'm not a complete idiot, some parts are still missing! :D
King 606, 2B , 3B, 3B-F, 4B-F, 7B
hyperbolica
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Re: Preserving raw brass

Post by hyperbolica » Thu Nov 28, 2019 1:27 pm

I have several horns in total or partial raw brass. Get grips or guards or wraps for the areas your skin (or white shirt collars) touches.
Last edited by hyperbolica on Fri Nov 29, 2019 9:40 pm, edited 2 times in total.
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Burgerbob
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Re: Preserving raw brass

Post by Burgerbob » Thu Nov 28, 2019 1:33 pm

Just let it be, polish when you want.
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paulyg
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Re: Preserving raw brass

Post by paulyg » Thu Nov 28, 2019 5:35 pm

Patina is good, it will passivate the surface and make it resistant to further corrosion- red rot and the like.

Water spots are not quite as good- these can lead to rot on thin metal.

Oil should not cause much of an issue, but it will cause the brass to patina at a different rate (faster). If you have acidic skin, it may do more damage.

Raw brass horns become low-maintenance around 10-20 years after they've been polished. Until that point, just be sure to wipe off all water drops and oil left behind after playing. I spray mine with Pledge furniture polish to help protect it.
Paul Gilles
Aerospace Engineer & Trombone Player
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Kingfan
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Re: Preserving raw brass

Post by Kingfan » Thu Nov 28, 2019 5:57 pm

I used Barkeeper's Friend to get the worst of the corrosion off. What should I use to finish the cleaning job and polish the brass?
I'm not a complete idiot, some parts are still missing! :D
King 606, 2B , 3B, 3B-F, 4B-F, 7B
Kbiggs
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Re: Preserving raw brass

Post by Kbiggs » Thu Nov 28, 2019 6:12 pm

Wright’s Brass Polish, the paste variety. It’s minimally abrasive.
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mrdeacon
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Re: Preserving raw brass

Post by mrdeacon » Fri Nov 29, 2019 7:46 pm

If you're worried about acid hands eating your horn all you have to do it's wipe it down after playing. Your horn will still patina but it won't get super nasty like it normally would.
Rath R1 2000s, Elliott XT
Bach 42B 1977, Elliott XT
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Minick Bass Trombone 1980s, Symington 1.5 ZR
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Kingfan
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Re: Preserving raw brass

Post by Kingfan » Fri Nov 29, 2019 9:21 pm

Kbiggs wrote:
Thu Nov 28, 2019 6:12 pm
Wright’s Brass Polish, the paste variety. It’s minimally abrasive.
Thanks. Found some in the kitchen. I know what I'm doing tomorrow now!
I'm not a complete idiot, some parts are still missing! :D
King 606, 2B , 3B, 3B-F, 4B-F, 7B
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Backbone
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Re: Preserving raw brass

Post by Backbone » Fri Dec 06, 2019 5:20 pm

Kingfan wrote:
Fri Nov 29, 2019 9:21 pm
Kbiggs wrote:
Thu Nov 28, 2019 6:12 pm
Wright’s Brass Polish, the paste variety. It’s minimally abrasive.
Thanks. Found some in the kitchen. I know what I'm doing tomorrow now!
Pics?
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Kingfan
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Re: Preserving raw brass

Post by Kingfan » Fri Dec 06, 2019 6:40 pm

Backbone wrote:
Fri Dec 06, 2019 5:20 pm
Kingfan wrote:
Fri Nov 29, 2019 9:21 pm


Thanks. Found some in the kitchen. I know what I'm doing tomorrow now!
Pics?
Never figured out how to post pics on this forum. Sorry!
I'm not a complete idiot, some parts are still missing! :D
King 606, 2B , 3B, 3B-F, 4B-F, 7B
JeffDeault
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Re: Preserving raw brass

Post by JeffDeault » Mon Dec 30, 2019 6:51 pm

Something else that can help is having a VCI diffuser in your horn case. Like Zerust VC2 or similar. They're common in electrical cabinets and firearm storages. What they do is releasing a gas that reacts with humidity and inhibit oxidation. Drop one in your case and replace it every one or two years.

Won't protect your horn when you play with, but will help keeping it from oxidation when stored in the case.
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