Conner Michaux 351 Posted February 1, 2019 Share Posted February 1, 2019 I have seen some amazing pictures of knives with copper washes, And I reaaaaally want to try it out on a sample piece of steel. How is it done?? here is one of the pictures. Post 748 26 Link to post Share on other sites
Alan Longmire 3,773 Posted February 1, 2019 Share Posted February 1, 2019 Probably the easiest way on a non-stainless blade would be to dip it in exhausted jeweler's pickle. That's sodium bisulphite used to shine up sterling silver by removing the copper that comes to the surface during soldering, etc. Or you could do the same thing with Ferric chloride. Dissolve a bunch of copper in ferric, dip a blade an bam! Instant copper plating. For stainless you'd probably have to do a crude electroplate job. Link to post Share on other sites
Adam Weller 346 Posted February 1, 2019 Share Posted February 1, 2019 That's pretty cool, any examples of long term durability and patina? Link to post Share on other sites
Conner Michaux 351 Posted February 1, 2019 Author Share Posted February 1, 2019 So I can get a bunch of ferric, then put a few pieces of copper into it, Then did a piece of metal in. Can I use copper pipe to put onto the ferric? Link to post Share on other sites
Alan Longmire 3,773 Posted February 1, 2019 Share Posted February 1, 2019 Any copper is fine. Leave it in there a long time. Like overnight or longer. And realize you will not be able to use that ferric for anything else. It's not terribly durable. I mean, it won't rub off, but it can be polished off with steel wool. Link to post Share on other sites
Conner Michaux 351 Posted February 1, 2019 Author Share Posted February 1, 2019 (edited) If the wash is instant then can you leave it in for a minute or so and get a deeper layer of the copper on it? There for getting a darker color? Edited February 1, 2019 by Conner Michaux Link to post Share on other sites
Alan Longmire 3,773 Posted February 1, 2019 Share Posted February 1, 2019 In theory, yes. It will plate the steel as long as there is copper dissolved in the ferric. Might want to soak the copper for a week or so before trying to plate with it, and then if it doesn't do what you want, you can use the saturated ferric as the electrolyte and plate the blade. Using a battery charger or other low-amp low volt DC power supply, run the positive wire to a piece of copper and put it into the solution. Hook the negative wire to the blade and put it in the solution NOT TOUCHING THE COPPER unless you like fireworks. Turn on the power. Something like 6 volts 2 amps is more than enough. The steel has to be spotlessly degreased and clean for this to work. Not even fingerprints allowed. Link to post Share on other sites
AndrewB 153 Posted February 1, 2019 Share Posted February 1, 2019 32 minutes ago, Alan Longmire said: In theory, yes. It will plate the steel as long as there is copper dissolved in the ferric. Might want to soak the copper for a week or so before trying to plate with it, and then if it doesn't do what you want, you can use the saturated ferric as the electrolyte and plate the blade. Using a battery charger or other low-amp low volt DC power supply, run the positive wire to a piece of copper and put it into the solution. Hook the negative wire to the blade and put it in the solution NOT TOUCHING THE COPPER unless you like fireworks. Turn on the power. Something like 6 volts 2 amps is more than enough. The steel has to be spotlessly degreased and clean for this to work. Not even fingerprints allowed. Fire works you say or a nice ZAP of electric shock. I don't think I'd be attempting something like this myself. Link to post Share on other sites
Conner Michaux 351 Posted February 1, 2019 Author Share Posted February 1, 2019 Is Copper wash considered a Patina? Link to post Share on other sites
Alan Longmire 3,773 Posted February 1, 2019 Share Posted February 1, 2019 In that anything you do to the finish is a patina, then yes. Plus copper takes on its own patina, so the blade will eventually be a deep russet brown. Link to post Share on other sites
Alex Middleton 831 Posted February 1, 2019 Share Posted February 1, 2019 There is a ton of good info in this thread. I copper plated a blade this summer just to get a handle on the process. Like Alan mentioned, the blade has to be completely cleaned and degreased before hand, but other than that it's pretty straightforward. Link to post Share on other sites
Kreg Whitehead 67 Posted February 1, 2019 Share Posted February 1, 2019 (edited) 20 minutes ago, Alex Middleton said: There is a ton of good info in this thread. I copper plated a blade this summer just to get a handle on the process. Like Alan mentioned, the blade has to be completely cleaned and degreased before hand, but other than that it's pretty straightforward. The blade there is mine. I ended up not caring for it and sanded it off.....so I can tell ya anything about durability. I dissolved an old wheat cent as mentioned in the other thread.....no electricity or current was used at all. Edited February 1, 2019 by Kreg Whitehead Link to post Share on other sites
Conner Michaux 351 Posted February 3, 2019 Author Share Posted February 3, 2019 Im getting some ferric this week so i can try this out. Is this the right stuff??https://www.amazon.com/Ferric-Chloride-Solution-Choose-Your/dp/B07BHX1X1F/ref=sr_1_1?s=arts-crafts&ie=UTF8&qid=1549224769&sr=1-1&keywords=ferric+chloride Also why does it have to be diluted with water? Link to post Share on other sites
Alan Longmire 3,773 Posted February 3, 2019 Share Posted February 3, 2019 That's the stuff. For etching damascus, diluting it makes for a cleaner etch. A weak solution is easier to control. For doing a copper wash I don't know if you'd need to dilute it, I've never done it. Link to post Share on other sites
Will Drake 2 Posted February 4, 2019 Share Posted February 4, 2019 (edited) It should work fine if you dilute it 1:4. I did something similiar except in my case it was by accident. I had a cable damascus blade with some brass bolsters attached and I wanted to re-etch it since I had shaped the bolsters after I attached them and I sanded through my previous etching. I put a piece of brass bar stock into my FeCl first just to make sure I wasn't going to mess up the work I had done. The bar came out pretty dull so I just went with the blade the way it was and attached some scales. Now anytime I etch anything in that container it comes out with a brassy color. I had to mix up a new batch to avoid it. Edited February 4, 2019 by Will Drake Edited cause I can't spell. Link to post Share on other sites
Charles dP 589 Posted February 4, 2019 Share Posted February 4, 2019 So if you etch a blade a bit deep, then stick it into the plating solution then sand the plating off the raised areas.... "The way we win matters" (Ender Wiggins) Orson Scott Card Nos, qui libertate donati sumus, nes cimus quid constet. Link to post Share on other sites
Alan Longmire 3,773 Posted February 4, 2019 Share Posted February 4, 2019 Yep. The late Larry Harley once etched the heck out of a blade and had it plated in 24kt gold. Then polished off the high spots. Because he wanted to. Pretty spiffy little knife in his self-proclaimed Hillbilly Baroque style. 1 1 Link to post Share on other sites
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