Toning Silver Coins by Anodization (fixed)
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- Опубликовано: 16 окт 2024
- In this video we show how to use Anodization to give colors to silver coins, also known as toning.
First we mix 200mL of water, 10g of powdered sulfur and 20g of sodium hydroxide and stir for ten minutes or so. This forms a solution of sodium polysulfides.
Then we place in the solution our silver object, in this case a silver coin. We attach the positive terminal of a battery, 1.5 volts is good, to the coin and touch the negative end to solution away from the coin. The silver will get oxidized by the current and form silver sulfide. The layer of silver sulfide imparts color to the coin depending on thickness which is proportional to the time the current is applied.
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Dude, i love your responsibility and sensitivity to your audience!
Been watching since the glow sticks videos!
Cheers
Thanks for the education! I came across your video via a coin community link. Glad I did! Very well explained, demonstrated, and responsibly caveated.
Can you make a video series covering how to handle different kinds of waste materials? I know you do in different videos along with the reaction but I think it would be cool to explore the chemistry behind how Halogenated solvents are destroyed in strongly basic conditions. I assume it’s would be because the strong base would be acting as a nucleophile??? Anyways would love to see different kinds of wastes and how they are handled!
I loved the disclaimer of coins value 👍 love the video as always
Im super happy that you took my suggestion for redoing anodizing!
FANTASTIC!!! Thank you SO much!! This was super educational, and fun to watch beside!! New to silver stacking, and trying to learn all I can! This was about the 3rd-4th video on removing tarnish -- and it is AMAZING!!!
I am actually watching this on a 4k TV, really amazing!
NurdRage thank you very much for this update on the chemical reaction! Love the original video! It helped me a lot.
Thank you so much for the explanation of the chemistry. Was wondering how it happened because I have coins that have that tone to them but did not do it myself... Now I know how it occurs...thx.
I'm in the "Artificial toning is bad!!!" camp, but thoroughly enjoyed this video and seeing how it is done.
That was fascinating my friend, very cool indeed!!!
Amazing stuff man I'm just imagining like what woman does not want some pretty blue purple rainbow silver coin in her purse when we switch back over to the hard currency it's going to be an emotional thing to both give and receive for whatever the work is it makes more valuable the moment of your life.
I believe the fix was a misuse of a electrical term, and it's all good now :) so I won't say more.
Thank you very much nurdrage
tek413, which one? i'm doing a report on that. would be good to know. thank you!
Very helpful information - I wondered why the reverse of my 1997 Quarter was purple around the eagle. 👍
Well with 97 quarters I reckon the process would be a bit different since they're made of Nickel not Silver
It's amazing how a good camera can get a super sharp image for 480p video
I loved this video! thanks! also, is the anodized color durable? is there any way to seal it on silver?
Easy to understand and very good information
I'm glad I found Mr. Nurd cause chemistry is not my strong point.
Amazing effect on coin
Big respect for the warnings
RE-Do the Potassium Video :) It was awesome and very detailed
working on it, need to get a few other things out of the way but its in the pipeline.
Great ! (^.-) Thank's for reply :D !!
Calcium polysulfides are used as a contact fungicide on dormant peach trees. The common retail label name is "Lime-sulfur spray", old timers make it by boiling sulfur lime and some wood ash over a fire outside. Application stinks but it is very effective for peach-leaf curl (with repeat applications water resistance is low) and listed organic as it quickly breaks into plant available mineral nutrients in the soil.
wolfedog99 did you try preety much the same tones? thank you.
Good work.
This anodization actually works pretty well with bismuth too!
Thank you for adding the part about coin collecting and how this is for science only.
Fascinating, I wonder if this can be done with any other metals.
Several, actually. Look up "Anodization of *Metal of your Choice*"
Nickel and copper for sure
On this example if you only want the tarnishing to occur on one side of the coin is there anything you recommend that can sit in the sulfide solution and protect the coin... Would prefer not to use Vaseline and then use a harsh chemical to take it off. Just looking for recommendations. Thanks.
Loving your videos.
It's amazing, thank you! What will happen to silver coins when they are put into sodium sulfide solution without electricity? Are there any color changes? If color also appears, how is this different from the color under power on conditions? We look forward to your reply.
That was pretty cool bro!!!
thats cool, and beautiful
Thank you for the reupload
5:38 ammonia works the best in this case. It complexes the silver sulfide and washes it off. Of course you still lose part of your silver, but it's way better than scripping it off.
"But I'll leave that up to you." LET'S BE REAL MR. NURD... I WILL MOST LIKELY NEVER IMITATE ANY OF YOUR VIDEOS... but they are orgasmic.
Dude that's so freaking awesome!!!! I see people selling coins way over spot all the time that are toned but how can you tell if it was done naturally or not and what does it matter if you get the same result? I have bought ASE from my lcs for spot that were turning rainbow colors but i always dip them in tarn x I love shiny white silver. Great video
I will love to invite you to my channel I got a nice at ( artificial toning ) collection coin videos just for hobby ! And u hope you enjoy it !
Oh man that hurts to read but to each their own. I love color on my coins so much
@@wowisntitanamazinglyamazin9550 well that was two years ago recently I bought some Eagles from the 90s that were rainbow toned and I encapsulated them as is so no more dipping them in Tarn X if they're rainbow if they're just dark black than yes lol I've come a long way😉
Can you refine uranium ore if it is convenient for you?
Ok Kim
Don't do anything with it though
cody's lab did it
There are plenty of videos on the topic. I think he may get a strike for it but there is plenty of them out there
Hey baking soda made with water into a paste works great to clean silver
Use warm water and make a soupy paste it works great for non key dates
is there a chemical way to anodise aluminium?
Thanks for the very clear info! I tried this, and what I got was an all-over antique yellowing without any rainbow colors. I had trouble getting my sulfur powder to mix very well since I don't have a magnetic stirrer, and the toning process took longer than yours did. Could not having enough dissolved sulfur be the reason I didn't get any pretty colors?
To answer my own question... I got a cheap magnetic stirrer. That did a much better job of dissolving the sulfur, and my silver pieces came out looking just as colorful as in the video.
If anything, it works TOO well. Two seconds with a 1.5V battery gave me a deep sparkling blue, while one second gave me a red-gold tone. To make it slower/more subtle, I might try lowering the voltage, using less sulfur, or chilling the liquid.
@@eriswerks mine messed up real bad, my bar turned black
@@viperfang5291 You may have been too close to the coins or connected too long. If a two seconds or less gave fairly satisfying results any longer than that is what happened in your case. Did you try it again on another coin or stop right there?
Alright lets do this with titanium now :)
Is this how they make the trending rainbow knives?
Liked and subscribed 😎
I didn't realize you have that much control over the film thickness.
Is anodization used to create structured/patterned thin films?
Would this be noticeable within the grading companies? Or leaving it in the dirt and sun for months a better way?
Супер! Этот метод только для серебра? Медь? Бронза? Никель?
Does this work with bismuth? E.g., after growing a crystal can you add more color?
Amazing people are finally making videos on this, still just for kicks obviously you could tone with liver of sulfur a lot faster, more controlled, and cheaper. I get triple over spot for coins but i do a really good job toning, better than a painted piece people pay for or a black ruthenium plated kennedy. Even the rio grande jeweler's catalog sells kits to plate silver coins in any combination of metals possible.
Yikes
Would this work on small glass items that were silver plated? But vase, toothpick holders etc.
HI. In this video at 3:37 you talk about "dichromate solution". Could you point me to the link of the video where this is mentioned? I am very interested in this solution. Thank you so much for your videos....👍
Hi. How well does this work with pieces that have souldering added on them.
What was wrong with the other one?
lavrans00 ...nothing. he said that he wanted to redo the demonstration in HD.
MrSimythe Vino The Creator No, he posted it a few hours ago, and reposted it again an hour ago. Threats why this one says "fixed." The one in low res was years ago.
Andrew Delashaw a wording that was directed that a few if us picked up in
Good job brother
I want ask you brother can i do for bronze or just for silver only
Thanks for being sensitive to the numismatists out here! Great video! Thanks!
Didn't notice anything wrong in the one you uploaded a couple of hours ago? -Or any difference for that matter :)
My pale yellowish white solution did work for practicing but I am wondering if solution needs to be orange to work better AND WHY ITS NOT TURNING ORANGE AND STAYING SULFUR COLORED-- do I need to buy the stirrir you have and if I do what’s it called? Took chemistry in college and high school years ago so I forget but I think that may be the key....,
Would this work on Copper
Does this type of artificial toning damage a coin if not done to the point where silver sulfite is created on the coin and the coin turns black? I had also stored some rare, certified coins near unopened cereal boxes and I noticed that some of the coins were developing tarnish or toning on them so I moved the cereal boxes. Have my coins been harmed by being exposed to the unopened boxes of cereal? I have since moved the cereal boxes. One of the coins has toned a little dark.
Are there other chemicals you can use to do this with?
Can I use this polysulfide to dispose mercury Nitrate? To make mercury sulfide?
Will this process work with liver of sulfur?
I'm guessing this is pretty much the same as using liver of sulphur... Is this method here permanent and hard to rub off?
How about thiourea instead of sulfide? Maybe less nasty if it works?
Good job
I want ask you may i do this way for bronze or copper
hi, id like to tone my glasses frames, can you help me out doing it, im a science student so dont worry about me handling the chemicals
Does this work on other metals besides silver ? ie : stainless steel ? mild steel ?
The fact that people cry so much about AT coins is crazy I say it’s fine as long as you are not selling them as natural. I also think these grading companies should still grade them
What was fixed if I may ask?
Alvis Gwa the bug was fixed in the previous update
Dick pics were removed.
You can do the same with titanium wire and just water and change voltage
will the toning either natural or artificial get lighter or darker over time? Can the rainbow effect darken or be lost over time like during years or months of storage? I have seen the morgan dollars in PCGS holders on sale- are these colors permanent or is only the natural toning permenant?
theyuha no toning is permanent. You can always remove the tarnish if you wanted to... but it would then become a "cleaned coin".
You don't refinish antique furniture, and you don't artificially tone, or clean coins, unless you want to destroy the collector value.
I just studied at Hobo coin carving. Is that Buffalo coin really big? custom coins?
Excelent video
As a jeweler is there a easy way to get an even black that won't rub off, and yes there are chemicals in the industry but getting the same finish ever time is challenging..
Would this work on lead like to artificially tarnish a stained glass windows? I know that there are patina compounds commercially available .
Oneofdazzz
That is a GREAT question! I've been dissatisfied with the look of the leading since a small child. Now that I can appreciate the craftsmanship, I can look past the leading. However, leading still turns people off. Stained glass windows are like a remarkable painting that someone has disfigured with a Sharpie.
Could you use potassium sulfate instead of sulfur powder?
can i get sodium sulphate by electrolizing that solution with an PbO2 anode?
Can this be done with potassium hydroxide and sulfer?
Was the backside of round toned as well?
Can I do that with any kind of metal?
Tried this with sodium hydroxide only on two different pieces of silver. Had no reaction take place other than a little bit of, I assume, hydrogen gas forming on the cathode. Where did I go wrong?
Is this normal water or di water also can you do the same thing on gold 18kt
Could you UN-tarnish it by reversing the polarity?
What other metals would this work for?
Very cool
Would using KOH have the same effect?
Can a similar process be done to aluminium?
Is the solution safe for storage?
Hi- I’m not sure if you’ll read this but if someone could answer me it would be great- it’s actually about the toning coins with anodizing- I am making the solution exactly like you said- HOWEVER I DONT HAVE A STIRRIR LIKE YOU- 1st I tried a mason jar and covered it, it got really hot and never turned orange even shaking it forever - next I did the 1/2 cup water with 2 tablespoons and 1 tablespoon meathod also in glass mason jar- I did a circular motion for about 12 min and NO ORANGE COLOR AGAIN!!!! Why? It was covered so I took the cover off after about 12 minutes thinking that covering it was the problem, stirred a little more but never turns orange- what am I missing? Help please!? Next I’m going to try uncovered with the 1/2 cup and 2Tb&1Tb method in circular tornado motion (I don’t have the magnet yet, maybe that’s the issue? But I’m stirring it similarly) - please help.
Mine turned orange first time. I used drain cleaning crystals and crushed match heads, and cut the total formula size down by about 75%. Didn't stir it for anywhere near half an hour, though did filter it a few times. Two wires soldered to the circuit board of an old remote control and I was toning, at ~2.5 volts. I've devised a procedure to tone, rinse with water, let air interact for about an hour, then tone further as desired. To remove it and start over, palmolive and a toothbrush generally does the trick. Soft cloth and silver polish if needed. I dropped out of chemistry in high school and went to work instead of college. Nice to be playing with a little chems again.
Will steel work too
I'd love to know if this could be achieved with chromed metals
Perpetual Cowlick no chrome doesn't tarnish like silver I'm not even sure if chrome tarnishs but no you cant
Hydrochloric acid does tarnish chrome.
djteac oh ok thx I thought it just dessolved it in not really a good chemist I'm more of a enigneer
Would the anodization of the chrome be comparable to that of the coin?
Perpetual Cowlick you probably wont get the same results but it might be toned similar to that of silver just maybe different colors.
Where would I get a battery contraption like that? I’m assuming it came from a toy or other electronic device. I’m not much of a tech guy, so I’m hoping someone on here can help me find something suitable.
Search: AA Battery Holder
i have sulphur powder which is contaminated by dirt (10%) is there any chemical method by which i can purify it?
boil it in xylene, most of it will dissolve. Decant the supernatant and let it crystallize back out.
+NurdRage is there any way we could recover sulphur efficiently from the solution you used in this video??
Sulfur is extremely cheap (it's actually a waste product from oil refining), any recovery method would be more expensive than buying more.
+NurdRage but is it possible to recover sulphur from that solution. just for the sake of chemistry.
it is possible to recovery any element from anything, it's just a matter of cost.
Can someone explain to me the part from 05:01 to 05:20 ? Thats is that? So when silver tarnish too much it will create black silver sulfide which will then fall off of silver? So when silver tarnish too much you will lose silver content when this black silver sulfide fall off? If i understand this right, silver sulfide will fall off of the coin surface and it will take some silver with it, can someone explain this chemistry to me?
I can't explain too much but imagine acid burning the surface, that's what happened.
Everything in the universe will eventually change form to something different with no exceptions.
This process speeds that up.
Now I gotta look up "numismatic".
It means that the coin is worth more than the face value of it. A designated $1 silver (1 oz) coin has a spot price of around $16.85
Numismatics just means "coin collecting". When he says a coin has numismatic value he means it's valuable to collectors, and they will pay more than the face value or metal value for it. It's not that different than stamp collecting. (My dad used to be a salesman for a numismatic company, selling coins to collectors.)
Christopher Sturm that's the definition of premium, not numismatics.
What are stir bars coated with to make them so nonreactive?
Teflon, usually
Teflon or some kind of plastic.
is it possible to do diffrent metals?
You need different chemicals and voltages depending on the metal, but yes. (Google something like "anodize aluminum" or whatever and you'll probably find several pages telling you what you need for that metal.)
Could you anodize aluminium in the same way?
You need different chemicals and voltages for different metals - googling will find you several pages telling you what you need.
A little overkill but I know some people like ridiculously rainbow tones. I would prefer a very small amount of natural blue tones that you see on old proof set’s mostly on the nickel. 1971 has nice ones. Cool video nonetheless
Whats that stirring device in the beaker
It's a magnetic stir bar. The hot plate uses a magnetic field to move it.
Would this work for anodizing aluminum?
You read my mind, I too would like to know if aluminum can be anodized at home.
Silver sulfide can be removed by thiourea solution.
Make a video doing this with gold. Or gold mixed with copper