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Kennyg2019 Veteran Member
Joined: 15 Jan 2022 Posts: 261 Location: NY
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Posted: Fri Apr 21, 2023 4:06 pm Post subject: Natural Patina Chemicals? |
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Hi,
I'm interested in learning natural patina chemicals/tecniques for forcing patina on raw brass.
I read about oak leaves but can't find any instructions (or videos) online.
Can anyone help me?
Otherwise, has anyone patinaed a brass instrument with boiled eggs?
Or perhaps (apple cider) vinegar?
What was your technique?
Can you post a video link?
Thanks,
Ken
P.S. I should say, I'm interested in obtaining a natural-looking patina...only without the wait! |
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dmh737 Heavyweight Member
Joined: 26 Jun 2004 Posts: 771 Location: Central Florida
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Posted: Sun Apr 23, 2023 2:58 pm Post subject: |
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No video or even pics. But I patina’d a brass mouthpiece body as follows:
Pour ammonia onto paper towels.
Sprinkle salt onto saturated towels.
Place brass piece onto paper towels.
Pour ammonia on 2nd set of paper towels.
Sprinkle with salt.
Place salt side down onto brass piece.
Cover for 2-12 hours checking periodically for desired patina.
Rinse with water and towel dry. _________________ Trumpet - LA Benge 3X+
Mouthpiece - Callet VF DT 10 top
Ken Titmus KTRT6 Backbore
flat.io |
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Kennyg2019 Veteran Member
Joined: 15 Jan 2022 Posts: 261 Location: NY
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Posted: Sun Apr 23, 2023 3:19 pm Post subject: |
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Can you describe the results…color etc? |
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Rogerrr Veteran Member
Joined: 16 Feb 2020 Posts: 144 Location: USA
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Posted: Sun Apr 23, 2023 5:49 pm Post subject: |
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I’ve done the ammonia and salt trick on copper and brass numerous times….you get a really cool blue-green color…. But in my experience it flakes/rubs off very easily….maybe there’s a way to protect it…and maybe it’ll stay in a few places
Try it out on pennies or something else first _________________ Sax player learning cornet & trumpet...and occasionally a little bit of trombone.
( so don't confuse me with an experienced player ) |
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Kennyg2019 Veteran Member
Joined: 15 Jan 2022 Posts: 261 Location: NY
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Posted: Sun Apr 23, 2023 6:01 pm Post subject: |
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I’m actually interested in a brown patina, but thanks.
I read that Renaissance Wax is a good sealer:
https://a.co/d/4qqm0Kb |
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dstpt Heavyweight Member
Joined: 14 Dec 2005 Posts: 1286
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Posted: Sun Apr 23, 2023 6:07 pm Post subject: |
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Last edited by dstpt on Mon Apr 24, 2023 6:37 am; edited 1 time in total |
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Kennyg2019 Veteran Member
Joined: 15 Jan 2022 Posts: 261 Location: NY
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Posted: Sun Apr 23, 2023 6:19 pm Post subject: |
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Thanks for the suggestion. I actually saw most of those.
The most common “natural” agents are fumes from vinegar (with or without salt) or boiled eggs.
I ordered a few small pieces of raw brass that I will experiment on with various patina agents to see what gives me the even, brown color I’m looking for.
Hopefully I can post pictures somewhere and provide a link when I’m done. |
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