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Author Topic: How to turn brass black?  (Read 4279 times)

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Offline Forestclimber

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How to turn brass black?
« on: June 12, 2010, 05:37:30 PM »
Is there an easy way to turn brass black?  How?
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Offline Victor3

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Re: How to turn brass black?
« Reply #1 on: June 12, 2010, 05:53:15 PM »
 This stuff works okay...

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Offline Swampman

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Re: How to turn brass black?
« Reply #2 on: June 12, 2010, 06:00:31 PM »
Wipe it down with the first dirty patch out of the barrel.
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Offline mechanic

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Re: How to turn brass black?
« Reply #3 on: June 13, 2010, 04:19:57 AM »
Quote from: Swampman on June 12, 2010, 06:00:31 PM
Wipe it down with the first dirty patch out of the barrel.

+1
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Offline Rangr44

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Re: How to turn brass black?
« Reply #4 on: June 13, 2010, 08:00:51 AM »
Most cold blue's will turn bare brass black, tuit' suite.

Caveat: Most factory's coat their brass furniture with clear lacquer, which must first be removed for any sort of color change to occur before you're ready for the dirt nap.

.
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Offline torpedoman

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Re: How to turn brass black?
« Reply #5 on: June 13, 2010, 09:33:52 AM »
cold blue gives brass a very nice color.
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Offline bkraft

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Re: How to turn brass black?
« Reply #6 on: June 13, 2010, 03:39:02 PM »
Would it hurt to blacken rifle brass? I load .22 hornet for two rigs; 10 inch T.C. and a 799 Remington. I have been thinking about blackening the brass for the T.C. to help me id. it easily. Also would the blackening wear off in a tumbler, or scratch off and perhaps ruin a die?
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Offline Semisane

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Re: How to turn brass black?
« Reply #7 on: June 13, 2010, 07:46:45 PM »
Quote
I have been thinking about blackening the brass for the T.C. to help me id. it easily.

Just use a red "Sharpie" to put a ring around the brass.  It stays on pretty well.  Simple and quick.
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Offline bkraft

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Re: How to turn brass black?
« Reply #8 on: June 14, 2010, 07:19:29 AM »
Good Idea :) Sometimes I have to make things too darn complicated. Thanks again.
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Offline nessmuk101

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Re: How to turn brass black?
« Reply #9 on: June 17, 2010, 08:05:57 AM »
Quote from: Forestclimber on June 12, 2010, 05:37:30 PM
Is there an easy way to turn brass black?  How?

Just practice with the rifle.  Shoot about once a month and the brass will be black in about 6 months.
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Offline Stuart C.

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Re: How to turn brass black?
« Reply #10 on: July 26, 2010, 05:50:55 PM »
Will blackening the brass with a dirty patch prevent rust, promote rust, or neither?
Will cold blue prevent rust at all?
 ???
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Offline Rangr44

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Re: How to turn brass black?
« Reply #11 on: July 27, 2010, 05:24:29 AM »
Solid brass doesn't rust, since it contains no steel/iron, it just tarnishes - another way of saying "discolor" or change appearance - when it comes in contact with various agents.
That's why it's had naval use for centuries.

When "rusted" brass is seen, what is actually seen is the rusting of a non-brass base metal that had been brass plated.
The green "verdigris", seen from brass' prolonged leather contact, is a surface growth.

.

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Offline pab1

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Re: How to turn brass black?
« Reply #12 on: July 27, 2010, 08:45:29 PM »
I'm building a Lyman pistol kit and used Birchwood Casey Perma Blue on the brass trigger guard. After the fourth application the brass looked silver. I lightly wiped it with 0000 steel wool which gave the brass an aged/tarnished look.  Not black but much better than the bright new brass look IMO. Thanks for the tip on the cold blue guys!
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Offline coyotejoe

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Re: How to turn brass black?
« Reply #13 on: July 29, 2010, 06:48:37 AM »
Funny thing about Birchwood Casey, I've found the Perma Blue works better on brass and the Brass Black works better on steel. However, they both wear off rather quickly.
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Offline darkgael

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Re: How to turn brass black?
« Reply #14 on: August 14, 2010, 01:41:58 PM »
Dipping in to a solution of Liver of Sulfur - available from jeweler's suppliers - will turn brass black in short order.
Pete
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Offline Semisane

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Re: How to turn brass black?
« Reply #15 on: August 16, 2010, 08:03:01 PM »
Check this link (read down to the fifth and sixth paragraph).

http://www.ganoksin.com/borisat/nenam/liver_of_sulfur.htm
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