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Forums10
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Jul 28th, 2025
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Joined: Aug 2005
Posts: 377
Member
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Member
Joined: Aug 2005
Posts: 377 |
Ferric chloride was used by Oscar as part of his etch for damascus.He also experimented with dilute sulphuric acid. He refers to it in both his 1997 article and the last one in DGJ. The purpose of the Ferric Chloride is to etch the iron and turn it black, the rusting process occurs after the etch, and the finishing is done with the boiling logwood bath. This gives the classic Black/White of American SxS's. All of Oscar's articles are available from DGJ. Still, even with Oscar's detailed "menu" it is more "art" than "science". Best, Dr. BILL
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Joined: Jun 2002
Posts: 2,330 Likes: 96
Sidelock
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Sidelock
Joined: Jun 2002
Posts: 2,330 Likes: 96 |
I would every much like to learn how to do black and white. Any volunteer mentors? Or will the good secrets die out?
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Joined: Jun 2002
Posts: 2,330 Likes: 96
Sidelock
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Sidelock
Joined: Jun 2002
Posts: 2,330 Likes: 96 |
Hi Pete,
Thanks for the link!
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Joined: Nov 2005
Posts: 4,598
Sidelock
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Sidelock
Joined: Nov 2005
Posts: 4,598 |
No problem. When some one sees a discussion like the one above, they should write a quick note to Dave and request that it be made a faq. It is the only way not to have the knowledge die out.
There are some very good discussions with many people sharing a wealth of information here.
Pete
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Joined: Mar 2002
Posts: 300
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Member
Joined: Mar 2002
Posts: 300 |
The following is from Dr Gaddy (after a long discussion)--hope it helps....
The use of ferric chloride (circuit board etching--very diluted) is used to remove the browning/black from bbls from one of the steels after they have been rust blued.
The sulfuric acid is a quick method to enhance the pattern, but removes significant amounts of metal. It is often used on knife blades but doesn't have much durability.
The use of a chemical (if forget the type) used to etch galvanized metal before painting is effective in seeing the pattern. Chemical may be found at any paint store.
Both the sulfuric acid method and galvanized metal prep produced a negative pattern enhancement whereby the ferric chloride/bbl blacking produced a positive pattern.
Hope this helps. Dr. Gaddy was a true gem and had thousands of tricks that only experience would highlight.
Dan
Dan
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Joined: Dec 2005
Posts: 142
Sidelock
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OP
Sidelock
Joined: Dec 2005
Posts: 142 |
Gordon,
You don't mention the gun. Is this a high end gun? What condition are the barrels in currently as far the damascus finish? Are they etched black & white, browned or blackened?
Pete
Pete, Sorry for the delay in the reply, I just got back in town last night. My guns are not what I would consider high end, a Baker A Grade and an L.C. Smith Syracuse 10 ga, Quality 2. I am just trying to determine if there is any way to make the pattern stand out a little more. Thanks, Gordon  
Gordon
If you don't fly first class, your heir's will!
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