Gun Bluing  RSS Feed

#1 2011-06-01 1:12pm

KoolAidMan
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Gun Bluing

I was just thinking of a pretty wild look that I haven't seen tried... but this doesn't mean it hasn't been done.


Anyone here personally tried bluing (either hot or cold) and clear coat over? I'm sure it would work with CroMo or even mild steel.

Any ideas, warnings, pictures?

Thanks in advance,

Ivan


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#2 2011-06-01 1:55pm

markanthony
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Re: Gun Bluing

Always wanted to do that to a frame.
Call up a gun shop or stop by and ask about the process.
My bro did a smith and wesson but didn't read directions.
Turned out streaky, practice on an old fork or frame so you can check best way to apply it( cotton balls?)


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#3 2011-06-01 2:07pm

Draw
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Re: Gun Bluing

it may look cool but its not a very effective corrosion inhibitor.
(but you may not be doing this for that reason)

and i think it would only work with steel and not anything alloy or cro-mo


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#4 2011-06-01 4:05pm

FullTwisting
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Re: Gun Bluing

Here ya go:  http://bmxmuseum.com/forums/viewtopic.php?pid=2618165

This image was lifted from that thread:

http://i824.photobucket.com/albums/zz167/THESCREWDIO/ASHURA%20BUILD/side.jpg


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#5 2011-06-01 5:05pm

KoolAidMan
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Re: Gun Bluing

FullTwisting wrote:

Here ya go:  http://bmxmuseum.com/forums/viewtopic.php?pid=2618165

This image was lifted from that thread:

http://i824.photobucket.com/albums/zz16 … D/side.jpg

FullTwisting,

Thanks for the link, I think that I'll try a gunsmithing variant. I don't plan to give a 'brushed' texture, but I'll lean toward an ultra-polished black-oxide look (more like a rifle barrel).

I learned from the posted thread that the clearcoat does what I'd hoped (repel enough water and allow the light through).

Thanks also for the input from markanthony and Draw! My concern would be that a 'proper' hot bluing would leave an oil finish and to clear-coat from there would be a mistake (I think). I'll likely give it a try on the build I'm preparing to buy.


Thanks Again,

Ivan


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There was once a young man who, in his youth, professed his desire to become a great writer.

When asked to define "great" he said, "I want to write stuff that the whole world will read, stuff that people will react to on a truly emotional level, stuff that will make them scream, cry, howl in pain and anger!"

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#6 2011-06-01 5:21pm

FullTwisting
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Re: Gun Bluing

No problem Ivan.  Glad to help.  That just happened to be a thread I was following recently.

When you mentioned 'proper' hot bluing and and oil finish, I though of a frame someone was selling a while back.  It was totally raw and just had oil rubbed into it!!  yikes  It looked kinda neat, in a rat-rod kinda way, but I can't imagine the mess it would make of clothing.  lol

Good luck with your build.  Keep us posted!


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#7 2011-06-01 5:46pm

dedmann
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Re: Gun Bluing

i wanted to do this with mine as well. i researched this a while back.....
it would be impossible to do it hot. there's just know way to control the heat evenly to achieve a good finish. it can be done cold; like paint. the problem again is the area it's going on. really hard for it to be consistent. i think i read an article on pinkbike about it....... good luck. wink


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#8 2011-06-02 1:54pm

KoolAidMan
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Re: Gun Bluing

dedmann wrote:

i wanted to do this with mine as well. i researched this a while back.....
it would be impossible to do it hot. there's just know way to control the heat evenly to achieve a good finish. it can be done cold; like paint. the problem again is the area it's going on. really hard for it to be consistent. i think i read an article on pinkbike about it....... good luck. wink

I am a little concerned about even temperature, but 'molten salts' are 'only' @ 290-300 degrees F ...

I think I can do it for forks without much issue I wonder if I can get away with letting the oxide harden, rinsing and going straight to clear coat.
If I try it with 'cold bluing' I'd do the application with steel wool until it's even and maybe use brake parts cleaner to ensure a 'dry' surface for clear-coat ...
If I get to it, I'll be sure to post pix.

Thanks for the input, it's appreciated.


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When asked to define "great" he said, "I want to write stuff that the whole world will read, stuff that people will react to on a truly emotional level, stuff that will make them scream, cry, howl in pain and anger!"

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#9 2011-06-02 1:56pm

Giginfrogg
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Re: Gun Bluing

I cold blue alot of things. Stem shafts, raw steel that needs protected. pedal spindles etc. Works great.


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#10 2011-06-02 4:48pm

KoolAidMan
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Re: Gun Bluing

giginfrogg wrote:

I cold blue alot of things. Stem shafts, raw steel that needs protected. pedal spindles etc. Works great.

Have you applied a clear coat over any of it; just curious, you know?


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When asked to define "great" he said, "I want to write stuff that the whole world will read, stuff that people will react to on a truly emotional level, stuff that will make them scream, cry, howl in pain and anger!"

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#11 2011-06-02 4:49pm

Giginfrogg
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Re: Gun Bluing

no clear coat for me. it didnt serve my purposes. dressing up welds and what not would be cool though.


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#12 2011-06-02 11:18pm

DECIBILL
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Re: Gun Bluing

Hey all-

That Ashura build is mine.  If i can pass a long some learnings from the "bluing" of the frame it would be to experiment on a junk frame first.  The metal doesn't discolor where and when you would expect it too.  You have to pull the heat away before it gets to the point of being "blue".  The residual heat that the metal absorbs will take it to the point of blue once the heat is removed.  It's a very touchy process, but it sure was fun though.....!!!!  Let me know if I can help with any other questions regarding the process.

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#13 2011-06-03 10:29am

h20-50
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Re: Gun Bluing

You can also blue with coca cola, aluminum foil and a car battery.  The amount of voltage it receives will determine the "color" of the blueing.  This is an old school trick that works very effectively on my motorcycle parts, especially the titanium bits.


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#14 2011-06-03 12:17pm

Giginfrogg
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Re: Gun Bluing

h20-50 wrote:

You can also blue with coca cola, aluminum foil and a car battery.  The amount of voltage it receives will determine the "color" of the blueing.  This is an old school trick that works very effectively on my motorcycle parts, especially the titanium bits.

how does it work. Need a you tube video for this. sounds interesting.


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#15 2011-06-03 12:27pm

KoolAidMan
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Re: Gun Bluing

h20-50 wrote:

You can also blue with coca cola, aluminum foil and a car battery.  The amount of voltage it receives will determine the "color" of the blueing.  This is an old school trick that works very effectively on my motorcycle parts, especially the titanium bits.

This almost sounds like an electroplating metod, then again, hot bluing is just a method to replace the potential space of red iron oxide (rust) with black iron oxide (magnetite), plating is not entirely dissimilar.

Could you explain a bit more of the technique when you get a chance?


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#16 2011-06-03 12:42pm

KoolAidMan
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Re: Gun Bluing

I found this:

http://www.wikihow.com/Color-Titanium


Sort of an anodization process for titanium, I think this is the basis for what you've told us.

Curious to know more.


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When asked to define "great" he said, "I want to write stuff that the whole world will read, stuff that people will react to on a truly emotional level, stuff that will make them scream, cry, howl in pain and anger!"

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#17 2011-06-04 5:24am

butcherbobhayes
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Re: Gun Bluing

KoolAidMan wrote:

I found this:

http://www.wikihow.com/Color-Titanium


Sort of an anodization process for titanium, I think this is the basis for what you've told us.

Curious to know more.

Found this on another thread. Good info.

http://www.global-flat.com/smf/index.php?topic=11280.0


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#18 2011-06-05 10:38pm

h20-50
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Re: Gun Bluing

KoolAidMan wrote:

h20-50 wrote:

You can also blue with coca cola, aluminum foil and a car battery.  The amount of voltage it receives will determine the "color" of the blueing.  This is an old school trick that works very effectively on my motorcycle parts, especially the titanium bits.

This almost sounds like an electroplating metod, then again, hot bluing is just a method to replace the potential space of red iron oxide (rust) with black iron oxide (magnetite), plating is not entirely dissimilar.

Could you explain a bit more of the technique when you get a chance?

Sorry, haven't been on in a while but yes it is similar to electroplating in a round about way.  Let me see if I can find a good link, there used to be one that gave a light spectrum of colors and told you what voltage gave what color.


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#19 2011-06-05 10:41pm

h20-50
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Re: Gun Bluing

Nevermind!!  KoolAidMan had posted the link that I was thinking about!  It's pretty straight forward but it works much easier, and cleaner, on smaller parts.  Never tried a frame but I have done exhausts and other titanium bits this way.


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#20 2011-06-06 5:57am

KoolAidMan
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Re: Gun Bluing

h20-50 wrote:

Nevermind!!  KoolAidMan had posted the link that I was thinking about!  It's pretty straight forward but it works much easier, and cleaner, on smaller parts.  Never tried a frame but I have done exhausts and other titanium bits this way.

h20-50,

With titanium, it's the most stable metal that we humans work, it can be anodized as well. Iron, and thus, steel are quite reactive with oxygen.

If I go this route, my oldest sister was a gunsmith; I'm sure she'll have a good suggestion about bluing for a f/f set.


Thanks for the addional info, btw!

-Ivan


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There was once a young man who, in his youth, professed his desire to become a great writer.

When asked to define "great" he said, "I want to write stuff that the whole world will read, stuff that people will react to on a truly emotional level, stuff that will make them scream, cry, howl in pain and anger!"

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#21 2011-06-06 10:33am

h20-50
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Re: Gun Bluing

No problems! However I would recommend trying it on something else first seeing as how the material the frame is made out of  more reactive metal than titanium.  You would have to experiment with different voltages to see what color you get, as I am sure there wont be nearly as much voltage required to blue a bike frame material vs blueing titanium.


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#22 2011-06-06 10:54am

esw
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Re: Gun Bluing

I've found you can "blue" many metals... even chrome to some degree.


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#23 2013-02-24 9:29am

RDB
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Re: Gun Bluing

I had a feeling this was done before...lol

when I was a machinist I would "cold" blue certain items we made, I would get stuck doing it out of the 3 of us because I had/have the most patience...and  had good outcomes with this type of product, as in being even...the largest pieces I remember bluing though were 12"...

https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQoyAAT1m6kBQheI0agLVPl-pq-jls7rxszoVumeit7riPudO5UCg


so I am gonna try it on my raw rider f/f/bars for something different, easier than paint (and its too f'n cold out), and something I have done before with good results lol

Last edited by RDB (2013-02-24 9:44am)

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#24 2013-02-24 9:51am

esw
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Re: Gun Bluing

RDB wrote:

I had a feeling this was done before...lol

when I was a machinist I would "cold" blue certain items we made, I would get stuck doing it out of the 3 of us because I had/have the most patience...and  had good outcomes with this type of product, as in being even...the largest pieces I remember bluing though were 12"...

https://encrypted-tbn1.gstatic.com/imag … riPudO5UCg


so I am gonna try it on my raw rider f/f/bars for something different, easier than paint (and its too f'n cold out), and something I have done before with good results lol

It should work fine. Make sure the surface is uniformly polished or rough. If it's rougher in spots it will be darker.

i have some aluminum black too. Don't buy it for you alloy part. It is not worth buying. I cannot get it to blacken ANY aluminum that I have.


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#25 2013-02-28 1:43am

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Re: Gun Bluing

I have used gun blue on pedal spindles and a set of flight cranks with the paint stripped off them; it works a treat.
I don't recommend clear coat over the top as the gun blue is a type of corrosion in a sense and will keep doing it's work under neath the coat...I know this from personal experience even after I cleaned the blued area really well with isopropyl alcohol.
If you do blue something then as with a gun barrel a good wipe with some gun oil or similar every now and again will stop corrosion from doing damage.


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