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Forum topic by brad posted 02-12-2008 02:29 AM 1164 views 1 time favorited 6 replies Add to Favorites Watch
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brad

136 posts in 3813 days


02-12-2008 02:29 AM

Topic tags/keywords: patina question

Can anyone tell me what it is you apply to a copper hinge to speed the patina process, I’m sure I’ve read it somewhere, but I cant remember where?
Thanks

-- Brad,--"The way to eat an eliphant is one bite at a time"


6 replies so far

View Rich_S's profile

Rich_S

53 posts in 3774 days


#1 posted 02-12-2008 05:42 AM

Depends on what color of patina you would like to end up with…are you looking for a bluish green, or a dark red/brown or black? There are commercial chemicals available from companies like Art Chemical, but below are some “recipies” you can try…I used the blue-green before….I have not tried the black one…try it on a sample piece first before you commit to it on your hinge so it doesn’t get screwed up.

Blue-green patina
8 oz Ammonia
8 oz White Vinegar
1/8 cup salt

Black
8 oz Ammonia
1/8 cup Liver of Sulfur

You’ll have to make sure the hinge is clean and any protective coating on it is completely removed (e.g. if they used spray laquer to protect it or something else). Mix up the ingredients until they are completely dissolved. You can then spray it on with a spray bottle..you should see the color change pretty fast…then let it dry…

-- Rich, Madison WI

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Karson

35100 posts in 4310 days


#2 posted 02-12-2008 06:07 AM

You can search on Google. Here’s one page.

http://www.cast-lighting.com/art-tony-color.html

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Southern Delaware soon moving to Virginia karsonwm@gmail.com †

View HAP HANSON's profile

HAP HANSON

45 posts in 3721 days


#3 posted 02-14-2008 12:00 AM

Brad
I have a copper/redwood fence I used to keep my dogs out of my grape vines I used copper pipe as the vertical rails. My two male dogs have designated these upright rails as a cool place to urinate and WOW I should market their urine as a patina agent (blue – Green color…. not the color of their urine umm that would be bad lol) Cheap renewable resource….think any one would buy that? Sorry thats the Veterinary humor coming out. Karson’s link is a good one I havent the guts to try and use dog pee for other projects.
Jody

-- Doc Hanson

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brad

136 posts in 3813 days


#4 posted 02-14-2008 03:54 AM

thanks, we will try it,,,,well maybe not the dog urine,,,it would be cheap though
Interesting….

OH NO>>>>>>>>

I’m such a “dufis”....they are brass, not copper….now what do I do. Fortunatly i haven’t collected a jar full of dog urine yet.

HELP !!!!!!

-- Brad,--"The way to eat an eliphant is one bite at a time"

View Dan'um Style's profile

Dan'um Style

14171 posts in 3892 days


#5 posted 02-14-2008 03:56 AM

be sure to soak it in laquer thinner first

you could also get some ideas from one of my blogs

-- keeping myself entertained ... Humor and fun lubricate the brain

View HAP HANSON's profile

HAP HANSON

45 posts in 3721 days


#6 posted 02-14-2008 07:24 PM

Brad,

There is a book you can see if its available to buy or check out from your local library called:
The Colouring, Bronzing, and Patination of Metals
Richard Hughes, Michael Rowe / Hardcover / Published 1991

Hope this helps
Jody

-- Doc Hanson

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