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kramergfy Heavyweight Member
Joined: 13 Apr 2004 Posts: 992 Location: Los Angeles, CA
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OldSchoolEuph Heavyweight Member
Joined: 07 Apr 2012 Posts: 2441
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Posted: Tue May 17, 2022 12:03 am Post subject: |
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Both of those examples are not what I would call without any blotchy discoloration, its just relatively light - and I think both have been cleaned, not just fully polished.
The amount of stronger discoloration that forms on raw brass depends on the surface contamination it is left with (no one puts the horn away for years immediately after polishing it to a perfect shine and wearing gloves).
In addition, there can be contaminants in the case that it comes in contact with. Then there is the air. The acidity of the air it is exposed to over time, or briefly leaking in only at a couple points in the case, the salinity of the air (again mild long term exposure or brief localized higher concentrations, and bleach fumes. All of these will cause different discolorations in the brass, and are all but unavoidable in a typical home. _________________ Ron Berndt
www.trumpet-history.com
2017 Austin Winds Stage 466
1962 Mt. Vernon Bach 43
1954 Holton 49 Stratodyne
1927 Conn 22B
1957 Holton 27 cornet
1985 Yamaha YEP-621
1975 Yamaha YEP-321 Custom
1965 Besson Baritone
1975 Olds Recording R-20 |
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shofarguy Heavyweight Member
Joined: 18 Sep 2007 Posts: 7012 Location: AZ
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Posted: Tue May 17, 2022 9:16 am Post subject: |
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I think OldSchool has it right. In the same vein, when I lived in an apartment in Mesa, nothing seemed to tarnish my mouthpieces. They just stayed bright silver. Now that I'm 18 miles east and in a new house, they turn blue-black in a few months, if left alone in the ambient air. Weird. _________________ Brian A. Douglas
Flip Oakes Wild Thing Bb Trumpet in copper
Flip Oakes Wild Thing Flugelhorn in copper
There is one reason that I practice: to be ready at the downbeat when the final trumpet sounds. |
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OldSchoolEuph Heavyweight Member
Joined: 07 Apr 2012 Posts: 2441
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Posted: Tue May 17, 2022 9:40 am Post subject: |
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shofarguy wrote: | I think OldSchool has it right. In the same vein, when I lived in an apartment in Mesa, nothing seemed to tarnish my mouthpieces. They just stayed bright silver. Now that I'm 18 miles east and in a new house, they turn blue-black in a few months, if left alone in the ambient air. Weird. |
Blue? Sulfur compounds in the air. Check for degrading plastics like foam cushions or carpet/padding, petroleum products, wine vapors or clay soils nearby. (salt vapor will do it too, but in Mesa that doesn't seem likely)
Oh, and if by "new house" you mean built in the last few years, outgassing from all of the OSB and engineered lumber will do it too. _________________ Ron Berndt
www.trumpet-history.com
2017 Austin Winds Stage 466
1962 Mt. Vernon Bach 43
1954 Holton 49 Stratodyne
1927 Conn 22B
1957 Holton 27 cornet
1985 Yamaha YEP-621
1975 Yamaha YEP-321 Custom
1965 Besson Baritone
1975 Olds Recording R-20 |
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