9.6g of pure gold= roughly $621..... I recall at the beginning of the video it's stated $1000 total for all 5 bags of 'trim scrap' ($100 for 2 bags; $400 for 2 bags; $500 for 1 bag)..... $379 loss on purchase of the trim to final yield, and that's IF the gold could be sold at spot price. Include the cost of chemicals for the processing and it's probably closer to a $500 loss on the cash invested in the trim boards. But a truly fascinating process and thank you for sharing (subscriber here). I wish you well and safe travels.
@leanbodycoachingllc9368
4 ай бұрын
Exactly my point…it’s a losing proposition! And very time consuming. Who on earth would do this process?
@sreetips
4 ай бұрын
Me!
@sreetips
4 ай бұрын
Just think of it like this: they got good money for their scrap. I got a new video for my channel. You get to see how much gold there is, and how to get it. No losers! We all win.
@j.g.b.2350
3 ай бұрын
@@sreetips don't get me wrong. It's not lucrative correct, but you are right by creating content that people will watch. I totally enjoyed watching the process because it's interesting and not something I'd go out and do. So thank you, keep up the interesting content, and I wish you well sir.
@briankaelin7728
3 ай бұрын
Who can’t sell gold at spot price lmao
@TheRealGKV
Жыл бұрын
Just when you think that processing trimmed fingers from electronics is a good way to make money, Sreetips goes to great expense to show you it isn’t. Thanks for the videos, sir.
@James-jm9fv
Жыл бұрын
I was thinking the same thing, spent $1000 plus Chemicals to get at Best $700 in gold??
@mikemaj8467
4 ай бұрын
And I'm sure he's being environmentally responsible come time to dispose of hazardous waste.
@smurffet7932
6 ай бұрын
You have done a great job simplify this. Thanks. I've been collecting foils for 6 years. Can't wait to try this
@nyscersul42
10 ай бұрын
I like your editing style. Not fancy, not showing off. But, effective, patient, relaxed. I like. :)
@brandonsandacz2863
Жыл бұрын
That little GOLD button looks so dam Beautiful 😍 I absolutely 💯 love this channel brother..... thank you so much for spending your time teaching us how to do what you do!!!! We all know you don't have to do it but you do anyway! We need more people like you, willing to share your knowledge with us and spending the time to do so!!!!! 🤜🤛
@anarchy_79
2 ай бұрын
Ha ha you could really hear Sreetips go all "my preciousss" once the gold came out! :)
@SubjectiveFunny
Жыл бұрын
That was quite a journey. Thank you for showing us all the steps together in 1 video. That was a lot of work, very fun to watch!
@aussiescraphunter7808
Жыл бұрын
havent watched many videos recently, work getting in t he way, first gold recovery video was this one, as per usual at the end of the video l had only a couple of minor questions to ponder, as per usual every step was as clear as crystal, l genuinely appreciate your relaxed, matter of fact way of teaching very well, cheers mate
@hiltonkuykendall9375
Жыл бұрын
For those who are wondering if there is still nitric acid in your solution but you don't have a small gold nugget for testing, you can use 24k gold leaf. It's relatively cheap for a book of 10 sheets and is an excellent alternative to a small gold nugget.
@erikmaguina1
9 ай бұрын
Nice idea
@user-lv3jo3cx5z
3 ай бұрын
Very Dangerous work🇺🇸
@michaelguajardo6973
Жыл бұрын
Love all your Videos I have learn so much from you I appreciate it much. I’ve been .refining 999 FS for a year now and refining gold as well. I’m a retired Disabled combat Army Veteran can no longer work but I finally found a great hobby thanks to you sir. Thanks you Sir I’ll continue watching your Videos. 👍👍👍
@TheGraveyardBlues
Ай бұрын
Awesome I'm homeless and having trouble getting hired. So I also play music and searching for all kinds of ways to make money, even if it's finding pennies a gain is a gain!
@davidtwining4059
Жыл бұрын
You were right on with projected yield I think you did a smarter more practical approach then previous fingerboard video, what a button
@HornetKingOfficial
Жыл бұрын
Hey Sreetips! How do you remedy having too much nitric in solution (in aqua regia after dissolving gold) that when you add stump out (like a lot) I keep getting stannous tests showing gold still in solution. Do I need to neutralize the nitric first somehow? Thanks!
@sreetips
Жыл бұрын
First, and most effective, is to add just enough nitric to just dissolve the gold. If done correctly theres no need to denoxx because there won’t be any excess nitric to remove. Second, takes a little longer, evaporate the gold solution down to a syrup until all the fumes disappear, then rehydrate with HCl before adding SMB. Finally, put the gold solution in an extra large beaker to avoid a boil over. Then just keep adding SMB until all the excess nitric gets consumed and the gold stays down and doesn’t try to instantly redissolve, because all the excess nitric is gone from the SMB reaction.
@samphillips003
8 ай бұрын
Ever try urea before smb? Seems to work
@sreetips
7 ай бұрын
No, I don’t have any urea.
@samphillips003
7 ай бұрын
Yessir this comment was before you enlightened me that was old outdated tek...sure appreciate you being here
@Victor-hb4hj
7 ай бұрын
Seems like the more efficient way to make money is to sell the fingers to the refiners…this is way too much work with nasty chemicals. Final calculation has to exclude time spent and chemical disposal costs
@Kopschik
5 ай бұрын
You know man, that you're an incredibly patient person! Respect 👍
@jwdickinson643
Жыл бұрын
Man, the lengths you goto and efforts you make to keep us fans and viewers entertained and educated is MUCH appreciated! Thank you, Senior Chief! 👊👊👍👍
@josephgarcia676
7 ай бұрын
How many computers does it take to get that amount of gold?
@twizz420
7 ай бұрын
@@josephgarcia676 hundreds if not thousands
@Powerful1776
3 ай бұрын
Not very profitable though!
@Antonowskyfly
Жыл бұрын
Great educational tutorial. The gold is back to the way it should be and it’s all yours! Thank you Sir! 👍👍
@davidtwining4059
Жыл бұрын
You're right they are I find his videos so soothing relaxing and entertaining
@dougo9135
Жыл бұрын
Back in the day my PC broke. So I figured out how to fix it because I couldn't afford to pay someone to fix it. Over the next few years I got really good at it. I started collecting computer parts to fix/upgrade friends and family members computers. I had a huge stock pile of parts. After watching this video I went to see how much I had so I could try this and my wife chucked it. I'm a lot more bummed about it then I should be. lol. You make it look so easy that I want to try it. I don't even really want the gold and I hated science in school. I never would have thought I would spend this much time watching these kinds of videos. Thank you.
@jazzandbluesculturalherita2547
Жыл бұрын
STUPID WIFE!
@bromisovalum8417
7 ай бұрын
women...
@vickielawson3114
6 ай бұрын
You have to throw away some stuff that means something to her to make things even. Tell that broad to leave your stuff alone.
@rkb6783
2 ай бұрын
SOUNDS LIKE... YOU GOT TERRIBLE ! communication skills. No Common Sense. And A LOT OF Broken Dreams... Don't Blame The Wife.
@edyoung6756
3 ай бұрын
Great video. Kudos to you and your chemistry skills. I really enjoyed this. You just gained another follower. Keep up the good work.
@sreetips
3 ай бұрын
Thank you, and welcome to my channel!
@andrejohnson6731
Жыл бұрын
Very educational. The moral of this story: don’t buy electronic scrap for refining. Hyperinflated prices, laughable yield. Only use that stuff if it was free.
@scrappydoo7887
Жыл бұрын
Not really no. There are plenty of lots that are very well priced and there are things that yield better than gold fingers. If you can get it for free then obviously it's best
@busbey61
Жыл бұрын
Again, I love collaborations! A cross-over vlog with you and Jason, from MBMM, LLC, would be great! He has a video of him running 100s of lbs of this through his crusher and shaker table. It would be interesting to see you two test both of your recovery methods, get an assay, and then maybe add his slag to your stock pots for later... I don't know, just a thought...
@sreetips
Жыл бұрын
He has a video on trimmed fingers? I didn’t know that.
@heliarche
Жыл бұрын
@@sreetips I believe his video was more bulk electronics such as entire motherboards. He did one with CPUs as well. I've never seen him do trimmed fingers.
@themakerken3453
Жыл бұрын
They certainly do approach their respective refining methods quite differently
@heliarche
Жыл бұрын
@@themakerken3453 I'm not going to say that Jason doesn't know his onions but I'd like to see Sreetips have a go at Jasons slag.
@marcuslarwa9098
Жыл бұрын
What’s the name of this Jason guys channel?
@scdahlman1
5 ай бұрын
Agitation is the key. You need to get the fingers rubbing against themselves to break the foils loose. A single bubbler is too passive. You need an aggressive boil by using a tube with multiple air holes in the bottom with air pressure strong enough to move things around. Letting it just sit is like holding you hands in a sink hoping they come clean. You need to scrub them to get them clean. Your soak would likely have been only a few days not weeks. Also, recharge your acid as the reaction weakens the brew.
@brucedeming3156
Ай бұрын
You need a portable plating barrel, a 6x12 inch and a rectangular tank that it would just fit in. Then put the scrap into the barrel, lock the lid and put it in the tank with the solution, and turn it on. The barrel rotates at approximately 4.5 RPM's and will scrub the gold foils off, which will go through the perforations in the barrel, and drop to the bottom of the tank. This will drastically reduce the time in the acid solution. If you clean the parts with acetone, the acid will attack them much faster. The whole process should be less than 24 hours.
@sreetips
Ай бұрын
Or, you can use hot dilute nitric to release the foils in a few hours. Drain off the waste solution (it will be full of base metals) then add AR to dissolve the gold.
@brucedeming3156
Ай бұрын
@@sreetipsYes you could but if there's any kind of organics on the surface the acid, or any acid for that matter won't remove the foils. After watching you check the parts many times and seeing the same ones each time not done or still looking exactly the way they were when you first put them in the acid solution, there's something blocking the acid from removing the foils. The abrasive action of the parts tumbling will cut through the organics with out using any extra chemicals, or increasing waste. The amount of time you are putting into doing these at the high cost to obtain them, can't possibly be very profitable. Is there anyone doing this on a large scale? I use Atlantic Refining for my scrap gold, silver, copper, and nickel, but they won't even take anything that they have to use any chemicals to process. I own an electro plating business and I've seen many different ways to strip gold. I've been using an orosene electrolytic process that I formulated myself. I hang the parts on a titanium wire, then make them anodic in my solution and the gold dissolves into the solution, while simultaneously plating onto titanium cathodes. Its not pretty but can be easily melted off the titanium. It takes about 2 minutes to strip a part with normal thicknesses, and then just melt with a torch. Then I send it to Atlantic to assay it and then they buy it.
@murlbailer3755
7 ай бұрын
Watching your videos are like watching a mystery. I can hardly wait for the finale. Video was long but not boring. 🐎✌️
@stevezozuk9622
Жыл бұрын
These are also some of my favorite videos of yours Sreetips . I'm happy you got what you were expecting for a yield , and I was wondering if you happen to drill a few small holes in the bubbling tube , would that help the process work any better ? Great content sir . See you soon my friend . Cheers
@Methoverbitches
Жыл бұрын
Would find the path of least resistance
@jinxjones5497
Жыл бұрын
Nope, the air would just go through the highest holes
@SMOBY44
Жыл бұрын
This is the meat of my hobby, ram and card fingers. I recently acquired about 110 pounds of ram. Use the same process you used here, and I think your AP solution may have gotten saturated. Could be why it seemed to stall. Your yield was right on the money, about 1.5 to 2 grams per pound of trimmed fingers. Keep up the good videos!
@sreetips
Жыл бұрын
The four pound bag was a total rip-off. They were the tiny gold foils with extra fiber board.
@SMOBY44
Жыл бұрын
@@sreetips I use Board Sort prices to determine what I'll pay. Right now clean fingers are $40 a lb. Whole ram boards are $20 a pound. I the 60 lbs for $325.
@sreetips
Жыл бұрын
They are getting hard to find in large groups.
@garytanner7883
Ай бұрын
Dude I have a lot of gold from a huge server
@johnadams5253
Жыл бұрын
Thanks for making the video. Been looking for a video of this type for a while.
@sunnytaufiq07
11 ай бұрын
Oh man. That's quite a journey. It's take lots of patience for the precious metal. And you did it. Best of health & good luck.
@1911darkstar
Жыл бұрын
Good looking button. Really appreciate the time and expense you spend to produce these videos. Not much return on the computer fingers (I know you are doing it for the channel ) but as always fascinating and entertaining content. The part where you were using sulphuric to precipitate possible lead gave me an idea for a band name for you. “Three Nines Fine And The Lead Removal”. When will T shirts be available? 🙂
@hoppy0720
4 ай бұрын
Dead head who likes a good colt?
@seanmassie3430
Жыл бұрын
As someone who works in environmental compliance and regulates metal finishers and electroplaters, it's amazing how similar your refining methods are to industrial scale wastewater pretreatment. Same processes on a smaller scale with hobbyist equipment.
@emustorage6769
Жыл бұрын
Spent $400 on old cards, another $200+ on chemicals, tools, buckets, beakers and supplies, 3 weeks of extraction, got $500 worth of gold. Tha ks for showing the process though, interesting video!
@smerdopsis6092
Жыл бұрын
Do you do anything to fumigate or do you just let the fumes go into the atmosphere? Idk if it would make the air unhealthy?
@pjgraves03
Жыл бұрын
How can sellers be selling 233 grams for 40.00 on ebay?
@sreetips
Жыл бұрын
Due to the myth; there a quarter ounce of gold in every scrap PC just waiting for those who can figure out how to get it. The persistence of this myth is astounding.
@apathy772
11 ай бұрын
@@emustorage6769 you missed the first part of the video. it was, 100 + 400 + 500, spent on fingers, which comes out to 1k spent for 629 return at todays price.
@aarons7975
Жыл бұрын
A Mr Coffee pot, they make the little nylon mesh baskets for those things to hold the grounds in. You can get them cheap at the second hand stores too. They make excellent buckets to hold fine stuff like foils in and rinse to let run thru then rinse back out into a blob to work some more. That way you are not pouring off a few here and there every time you rinse. The surface tension can be a booger sometimes. Granted purity is a thing in the final product but for this stage, use a surfactant. Jet Dri works
@robertlavigne9828
16 күн бұрын
Fascinating but time consuming. You learn things anew every day on the net. Imagine I didn't have to pay for college this semester lol. Great job
@TechneMoira
Жыл бұрын
I may have said this before but, in my opinion it would be far easier and less wasteful to blend such "fingers" to dust which will also contain fine gold dust. Mixing that dust with nitric should extract 10 times faster and with far less acid any unwanted metals in my opinion. Nevertheless it was an interesting episode, as always. Too bad the yield dollarwise was much lower than the acquisition price... but it still makes a very entertaining video to watch :)
@albertthedogeinstein7983
Жыл бұрын
He makes up for it through ad revenue
@jonballard4453
Жыл бұрын
I was thinking the exact same thing
@MetroidChild
Жыл бұрын
Even easier is cooking them in an oven which goes up to 400C, then they can be scraped off pretty easily, basically replicate the conditions that normally cause pads to lift from boards when soldering.
@bitsofeverything8385
Жыл бұрын
The dust is a fairly dangerous mess, i'd rather have the plastic turned to fuel, then metals extracted from the pcbs.
@Alondro77
Жыл бұрын
Nitric will cause a BIG problem if there's tin anywhere. You'll end up with the dreaded metastannic acid and insoluble tin oxynitrate. ALWAYS at least clean off the fingers with HCl for a day to get rid of the tin.
@TheDurdane
Жыл бұрын
A tip: You can speed up the rinsing of the last remnants of gold foils by putting them in a large plastic detergent bottle, putting the cap on and shaking. You then treat large areas of the fingers at one time. It's also handy to use another cap in which you've drilled some large holes. If you change it after shaking for the closed cap, you can easily pour out the gold particles. In this way you can reuse all the AP without creating too many waste liquids.
@sreetips
Жыл бұрын
A tight lid on the bucket and shake sounds like the simplest solution.
@TheDurdane
Жыл бұрын
@@sreetips Your right. Even better!
@psychosoup22
7 ай бұрын
This is really amazing work! I love how relaxing your content is as well, you’re doing awesome content, keep up the good work man!💚
@rocketmaan1005
3 ай бұрын
Great video. Thank you. In case someone tries to do it differently than exactly as you've shown, Might mention that you never pour water into acid, always acid into water.
@TheMilwaukieDan
Жыл бұрын
Wonderfully informative. Off the top of my head…I suspect you lost value when considering the total cost of the fingers, shipping and chemicals. Thank you again Sir. I learn so much from your videos.
@imakefights
Жыл бұрын
You can buy 10 grams of gold for far less than what he spent on the fingers and chemicals
@johnhein4851
Жыл бұрын
Hey Sreetips! Love your videos! I know the computer scrap thing isn't really your jam because the yields are low. Should you upload another trimmed slot card teeth video there is a faster cheaper way to strip the foils you could try. Maybe do a head to head video and see what way is the most cost effective. High acidity vinegar (I used 7.5% because i couldn't find 10%) sea salt and 3% hydrogen peroxide. I found it worked pretty good. Just an idea for you. Take care man!
@sreetips
Жыл бұрын
I did a video on fingers using salt and vinegar a long time ago. It’s posted on my channel.
@bikerbob2005
11 ай бұрын
Add more h2o2 and it will work harder. 3 week? Also put bucket on a shaker table. { I use 25% and wet the well trimmed fingers, then into HCl}
@4seasonspix
9 ай бұрын
Great experiment 💛 The bucket with fingers was probably overloaded - dividing the content might have resulted in faster detachment. So, in the U.S. on July 7, that gold button was worth $593.28 (9.6 grams x US$61.80 per gram for 24K gold) Yeah, those fingers were definitely way overpriced. I wonder how the sellers arrived at those prices?
@sreetips
9 ай бұрын
They’re just trying to get as much as they can. If people would look at my videos on this topic and see the yields that I get then they would be less likely to over pay. The sellers would be forced to drop the price if they wanted to sell it. I’ve got some more coming and I’ll repeat this experiment - again. I agree, the bucket was overloaded.
@markpennella
9 ай бұрын
So he paid $1000 for trimmed fingers. He ended up with $600 worth of gold. -$400? Plus, hydrogen peroxide $5. 2 gallons or Hydrochloric $?. Nitic Acid$? other acid? Am I missing something? Oh, labor (love of labor). Amazing and I want to do this, but I can't afford to loose $500-$600 to learn...one day. It is a blessing that he can afford to show us and I will show my students...as well as give him a donation ❤️
@sreetips
7 ай бұрын
Here’s what’s missing: the value is in the video, not in the gold that I recovered. That was just a bonus.
@Mattie_LIGHT
6 ай бұрын
I was just doing the math too. I skipped through the video some so I wasn't able to nail down your cost for the fingers but if $1,000.00 is correct and you are yielding $565.00 of gold (10/7/2023 price) then you are $435.00 in the hole not including the cost of the chemicals, equipment, video equipment, computer, video editing software, your labor, etc, etc... However, since your KZitem channel is monetized (and you are, I have a way of checking through your home page's code), then at best i'm assuming you have earned $ 2,458.00 minus taxes through AdSense based on this video's views as of 10/7/2023. If this figure is correct then was the $ 2,023.00 minus taxes, chemicals, equipment, and your labor worth it? For me, the educational content was priceless, thank you!@@sreetips
@Glasher1
6 ай бұрын
@@sreetips The moment you mentioned the expected recovery it was quite clear you weren't looking to turn a profit.
@frankvelez9510
3 ай бұрын
I appreciate everything in context and the beautiful display of the hard workmanship that you put into retrieving the yield at 9.6 g of gold but even at the best price today it's $65 at best for 1 g of gold at $624 give or take for that yield I say strips and chemicals alone You didn't even make your money back not even to break even so you have to have a love and some pretty strong lungs to absorb the ramifications for the long haul in the end game. Either way you have my respect love and appreciation for teaching someone such complicated and 100% working methods God bless you and keep up the good work May your beautiful work give you a lifetime of happiness Happy New Year my friend😊
@sreetips
3 ай бұрын
I know it looks like a loss. But this video is very valuable.
@frankvelez9510
3 ай бұрын
@@sreetips I didn't mean it to be disrespectful as a loss I was just pointing out that it was a wonderful video but you can't do this unless you have a love for the chemistry and not just chasing the yield because the beauty of it is the work and utilizing chemistry which is the key to everything metals or not and that is the beauty of it which makes it priceless so I agree
@sreetips
3 ай бұрын
No disrespect. Most people view it as a loss because they want to buy it low, recovery the metal and immediately resell for more than was paid for a “profit.” But I don’t work for paper. I work for gold (and silver). I would have paid more for this scrap. The ad revenue for this video is up over sixteen grand, which I quickly convert to more gold and silver. Plus, I get to keep the gold. I hate to reveal this because it sounds like bragging. So in the end, you get to see the process, and how much this type of scrap actually yields. I get paid for my work. Everybody wins. And that’s a good thing.
@Saintity
Жыл бұрын
I like how the fingers are in ziplock bags but he just is like f these bags and slices them open
@dor-si9145
Жыл бұрын
He's going to put those bags in his scrap pile, then reduce them down with some HCL and later some piranha solution and suck the .00001g gold from them in another video.
@kmarasin
Жыл бұрын
@n n You guys anyway. I was relieved he didn't struggle with trying to open them properly on camera (though doing so, then fast forwarding through would've been fine)
@c.jjohns6758
Жыл бұрын
He was like " f these zip bags" it was pretty gangster
@nuggetwagon
Жыл бұрын
These are exothermic reactions. Fast reaction can be a problem. I know, I know. Who cares if it explodes. So much must first be removed before a
@dd11111
Жыл бұрын
Kinda' confusing, seeing as how the video is about Recycling gold from old chips. Ironic.
@Kenlydford
Жыл бұрын
I like this channel! It’s so intriguing to me that I actually had a dream about pulling gold out of old iPhones. I’m not even joking
@Kenlydford
Жыл бұрын
@@taxesdeathandtrouble.1886 I’m good lol
@Kenlydford
Жыл бұрын
@@taxesdeathandtrouble.1886 I was out of work for a few months because I had pneumonia and had to be on oxygen I was in the dang hospital for 12 days. It sucked I’d fall asleep so much that I couldn’t drive anywhere. I’m straight up grateful to God and glad I’m back to normal. I definitely had some crazy dreams tho.
@Kenlydford
Жыл бұрын
Thank you Taxes:) fr
@paulfranklin3270
Жыл бұрын
I think that is why you see used phones and diabetic test strips purchased.
@citylotgardening6171
Жыл бұрын
Very nicely done video showing the process from start to finish thanks for sharing 👍
@miketyson8933
Жыл бұрын
Wonder if grinding the computer pieces up wpuld work better. Its what I would do when making my honey oil back in the day makes the chemicals get through the smaller pieces either. Id be curious to know if you kept all your fingers from past projects and seen if you couldn't get more Gold out of them by grinding them up to see how much you missed...
@MrPlazaPlayer
Жыл бұрын
I use to work in a precious metals scrapyard. We granulated the boards via big industrial granulators. The company built the business up from this basic set up like shown in the video. This was at least 35 years ago. I still have a bag of platinum pips somewhere, I’ve always wondered how much they are worth.
@ColeMay
Жыл бұрын
Right now the price of scrap is way up. Every morning I see huge trucks of scrap going to the yard.
@justingallant8558
11 ай бұрын
Theybare worth hundŕeds of thousands
@MrPlazaPlayer
11 ай бұрын
@@justingallant8558 I better find them and decide what’s the best way to get the platinum off the pips. Thanks for the reply.
@danevertt3210
11 ай бұрын
@@justingallant8558 haha hundreds of thousands huh
@brentholladay3113
11 ай бұрын
Why do you think our Catalytic converter’s are being stolen right and left, lol
@hansmaier608
Жыл бұрын
Not sure if it will work but you should try to use your ultrasonic cleaner to separate the foils from the boards after the acid/peroxide treatment
@schsch2390
7 ай бұрын
So $1000 worth of gold plated clip offs yielded a month later about $570 in gold. Also needed several hundred $ in equipment. The muriatic acid fumes and the brown fumes above the nitric acid treatment are quite toxic and the muriatic acid fumes will result in any ferrous metal within 10-20 yds in a closed space rusting solid over weeks.
@sreetips
7 ай бұрын
Yup, getting pure gold, from any source, is never quick, easy, or cheap.
@catgynt9148
8 ай бұрын
I wondered if you could have chucked an impeller into a drill and use it to agitate the fingers in the acid peroxide solution to release the fingers quicker? Alternatively, putting the finger boards through a blender or crusher to reduce sample sizes may have reduced your processing times and material costs. At the current price of gold I think you probably lost money on raw materials, acids, peroxide and other reagents. Interesting process, thanks for sharing. Cheers
@Kaffeesuchti1985
Жыл бұрын
Hey Sreetips! I think you already know , but the "chloride" at Minute 11:22 ff is probably to some part Silverchloride. HCl and H2O2 dissolve silver metal like "fizzy cubes" in water. Also, just as a tip: Bubbling air through the solution is not as effective as stirring. When i did pretty much the same as you did, all the foils came completly off after 3 days of stirring.
@sreetips
Жыл бұрын
I notice the chlorinated tap water produced that precipitate. After sitting, and the chlorine was gone, no more precipitated formed.
@byrdmania4895
Жыл бұрын
How effective would it be to put the bucket on a vibrating plate and just vibrate the mix for who knows how long?
@DyersEve726
Жыл бұрын
@@byrdmania4895 I was thinking the same thing. Fill a bucket and hook it to a paint shaker 😆
@johnallright6847
Жыл бұрын
Yea , cannot see any reason to spend a month dissolving when you could agitate it in some kind of dough making type machine and lik you said it should all be off in two or three days...
@prestontucker6171
Жыл бұрын
I know it's maddening to think about doing this, but it seems like a lot of those foils are clinging to the fingers just barely and could be dislodged by some sort of scrubbing/abrasion or pressurized liquid washing...would it be worth it to have a simple electric toothbrush to take to each finger as you sort through them one-by-one? Would it increase your yield/shorten processing time by any significant measure? As always, wonderful work and education Mr. Sreetips. Thank you, sir!
@prestontucker6171
Жыл бұрын
Another option might be to use a product called a "waterpik", which is normally used as an alternative to dental floss.
@frantiseklaluch6605
Жыл бұрын
@@prestontucker6171 Yes, but as Sreetips said, he wants to minimise the amout of waiste solution. Some vibration mechanism attached to bucked could help too, I will try that with my fingers... I mean gold fingers... not my fingers... you know...
@dizzy_derps
Жыл бұрын
Maybe something like this? kzitem.info/news/bejne/mWh-uamvgWSai20
@Singe0255
Жыл бұрын
My thought was putting the acid solution bucket into a concrete mixer so the fingers tumble themselves
@sreetips
Жыл бұрын
A viewer recommended a tight lid and shake the bucket with the A/P and fingers inside.
@dbaca148
Жыл бұрын
hi @sreetips. thank you for these videos. quick question. if we don't have fumehood and are refining outside with nitric. what kind of protective mask and gloves do you recommend? thanks!
@sreetips
Жыл бұрын
I use 3M P95 mask and nitrile gloves.
@dbaca148
Жыл бұрын
@@sreetips started my first 2 experiments: AMD pins and PBC boards. first batch spilled over lol; used small beaker and too much nitric; spilled over again when i put it on heat; transferred to larger beaker. PCB boards worked perfectly. put pcb's in dilute nitric in large bucket and it removed the foils very nicely over night. no need for messy hcl/peroxide method. the AMD pins are in a thick green solution. trying to figure out how to proceed.
@williamboydsmith4773
Жыл бұрын
I really like your videos! Great job!
@seanflannery5976
Жыл бұрын
Love your videos about to give this process a try myself. Looks like you got a good yield that last batch of fingers had alot of empty board space on them. That seller definitely padded the weight alot. Thought it might've brought your yield below the 9 grams you expected. Would love to see you do a video on IC chips. Been learning alot from your videos thanks for sharing your knowledge with the community.
@scrappydoo7887
Жыл бұрын
They are just different types of gold fingered connection pieces. There was a good mix of older and newer fingers there so the wider fingers are generally thicker gold 👍
@rogerhaag9069
Жыл бұрын
Hello Someone else might have suggested this? Use a metal paint stirrer propeller blade turning by a drill motor to agitate the computer pieces in the acid bath….to dislodge the foils….instead of using your fingers one by one?!?!
@maxierex6036
Жыл бұрын
I love your videos,, I'm just scared of the acids and fumes,, can you recommend a good gas mask for working with these kinds of fumes and acids,, Thanks for all your help,,
@sreetips
Жыл бұрын
Yes,
@sreetips
Жыл бұрын
No gas mask, must have a fume hood.
@Metal-Detecting-NC
11 ай бұрын
I use the same solution for etching printed circuit boards. If you added more hydrogen peroxide, the etchant would be stronger and would have taken a lot less time.
@MrLordsongblade
2 ай бұрын
Awesome videos! And great tips! One quick question for me though. When you rinse the gold foils out of the bucket around the 15:30 mark are you just using distilled water or is that another acid solution?
@MrLordsongblade
2 ай бұрын
Nevermind. You answered my question five minutes later. lol
@scrapman502
Жыл бұрын
the reaction you are seeing that soon is from the solder on the finger boards. They should have been clipped closer to the edge, or resistors / Lead removed first. The seller should be ashamed of himself selling those boards for that much. It's like taking aluminum cans to the recycler filled with junk to increase the weight.
@Alex-kp3hr
Жыл бұрын
you know that famous saying "a sucker is born every minute."
@scrapman502
Жыл бұрын
@@Alex-kp3hr Sreetips was born, re-born and re-born etc....
@sreetips
Жыл бұрын
Give him a pass.
@sreetips
Жыл бұрын
P.T. Barnum
@Enjoymentboy
Жыл бұрын
A great video and one that perfectly illustrates why I sopped dealing with these things. lol The amount of time waiting and the volume of waste really bothered me. AP is an effective and cheap option but so slow and wasteful. If I do get any of these to process (typically I'll stockpile them until I have a lot) I usually resort to a nitric soak (in diluted 20-25% nitric acid). It's more expensive but WAY faster and I can recover much of the nitrate salts and produce more nitric later on. What took weeks of sitting for AP is usually done within 24hrs. Cleanup is much easier too as no precipitate forms when washing. For washing I found that putting all the fingers in a bucket with some water, sealing the lid well, and then just shaking the life out of it (roll on the floor too) does a fantastic job of separating all those stubborn foils.
@sreetips
Жыл бұрын
That’s a great idea, thank you
@futuremind2440
4 ай бұрын
On this video have all the step we want to follow ? I also have idea to follow this process brother,
@user-tf2lj3xh9d
4 ай бұрын
Dave, Al here. Interrsting to finally see you doing this after 34 years... I will get back to you
@troyshore3357
7 ай бұрын
Very interesting video. Wonder if u could use a wire bush t scrap off the big pieces ?
@sreetips
7 ай бұрын
Possibly
@goldrefining
Жыл бұрын
I did about 25 lbs this week alone. It's a lot of work brother! Save some of the used ap. Just put some in an empty hcl jug. Next time you need ap for something dump the used ap in with your hcl. No H2O2 needed. It won't hurt a thing. It will kick start the process and save you many days. Get two of the same size buckets. One will slide inside the other. Drill holes in the bottom of the top bucket like you did with the smaller one. It will take less solution to cover the materials and you can just use the handle on the top bucket to rotate the fingers around and drop it back down into the bottom bucket. 1 gallon of hcl will do about 10 lbs of fingers. To me the ap process is like silver. It creates a lottt of waste solution from washing.
@sreetips
Жыл бұрын
That’s a good one. Thank you
@scrappydoo7887
Жыл бұрын
Yes it's like adding a bit of burnt copper wire into fresh HCl to kick-start the solution 👍
@goldrefining
Жыл бұрын
@@sreetips Another thing i noticed was it seemed like you didn't have enough air going on there. Though it takes very little air in your waste solutions for cementing and stirring the ap process is different. It thrives and drives on air. The more the better. Air=time. You can get an air stone and use it in solution. It will hold up and not break down. That will give you smaller air bubbles and more surface air for the air to absorb more efficiently.
@sreetips
Жыл бұрын
I’ll do it!
@ExtractingMetals
Жыл бұрын
I’m shocked at how much they charge for the circuit board fingers! I enjoyed watching this refining process.
@Bobbywolf64
Жыл бұрын
The problem is that people are paying that price. I know sreetips is doing this for the video, and he will make up the lost revenue with that, but it makes it essentially impossible to refine the fingers for a profit. The sellers are selling for the price they are able to get. A few are paying that price, so it just makes the who process unprofitable.
@sreetips
Жыл бұрын
Well, at least folks have a place to check before spending their hard-earned fake paper dollars on the over-priced scrap.
@ExtractingMetals
Жыл бұрын
@@sreetips true true. I appreciate the work you do. Have you thought about setting up a patreon page?
@sreetips
Жыл бұрын
No
@craigk3704
6 ай бұрын
Not being a chemist or an engineer I found this very interesting. I would think using a flat rack system would speed up the acid soak process. Meaning all the trimmings laying flat instead of all clustered together. Either way, spending more than the yield is going backwards. But thank you none the less for a really informative vid.
@sreetips
6 ай бұрын
Recently, I used hot dilute nitric. Got those foils off in a day.
@denniskennedy-xv9fn
5 ай бұрын
I really appreciate you and This video. You are awesome man
@scrappydoo7887
Жыл бұрын
I think your solution of ap was saturated hence the length of time taken to remove the foil's. Those sellers should be trimming those fingers a lot closer so you probably have had more copper and mlccs ect for the HCl to tackle. Beautiful foils though 😉👍
@frantiseklaluch6605
Жыл бұрын
Yes, I think so too, just some water could speed the process...
@jeffburrell7648
Жыл бұрын
This is a very informative video but unless I am missing something, the lesson is that one must be VERY careful when extracting gold from electronic scrap that the cost of the scrap is not too high. If I did my math right, 9.6gm of gold is worth about $534 as of 24 July 2022 and you spent $1000 on the scrap and an additional amount on the chemicals which yields a substantial loss.
@OnlyCowardFascistSilenceSpeech
Жыл бұрын
I was just thinking the same thing. I know he said grossly over priced but holy crap that's bad. Even to break even would have to be less than 50 dollars a pound in scrap. Not over a 100 lol
@sreetips
Жыл бұрын
Now you know the truth about how much this scrap will yield and how much it’s actually really worth.
@scroungasworkshop4663
Жыл бұрын
Great experiment but I was interested to know if it was at least profitable. If you are going to continue to do this then I would suggest building a tumbler or obtaining a cheap cement mixer to release the fingers as then you have mechanical as well as chemical release action which would speed it up a lot. The acid will also dissolve any cement in left in the drum of a cement mixer so that will come up like new. That solid gold nugget at the end sure looked nice. Cheers Stuart 🇦🇺
@sreetips
Жыл бұрын
Stuart, I normally don’t process much escrap because the yields are low and the amount of waste is high. I did this so I could create the video.
@scroungasworkshop4663
Жыл бұрын
@@sreetips OK thanks for your reply and it was worthwhile as is was an excellent video 👍👍
@karkess313
11 ай бұрын
By today's price of 63.79 per gram. He lost a few hundred dollars.
@aga5897
11 ай бұрын
Getting the foils off always seemed crazy to me. Surely it'd be easier to dissolve away the PCB material and then just filter out the Copper/Gold and process it normally. The common FR4 PCB material is basically an expoxide, so epoxy solvent from home depot might work. Needs some experiments, of course ;)
@grimace4257
Жыл бұрын
You the man 👍👍
@thatlittlevoice6354
Жыл бұрын
Have you tried dynamite? I'm fairly certain that would separate the foil from the boards. Don't try it in the fume hood.
@frantiseklaluch6605
Жыл бұрын
not sure about that, could separate fingers from hands no doubt, but foils are connected to base metals very well. I do not see any good way how to insert dynamite between base metal and gold foil. Sounds laborous. May be small explosion near the bucket could give it a stir or burning dynamite could give some needed heat. Other than that is dynamite just overblow...
@sreetips
Жыл бұрын
No
@jessevos5109
Жыл бұрын
When transferring to the aqua regia. Do the gold foils still have undissolved base metals attached to them? If so does the aqua regia separate the two metals thus purifing(refining) the gold to a higher karat?
@sreetips
Жыл бұрын
Aqua regia will put everything in solution, including some base metals that adhere to the foils. That’s why the solution was off-color.
@KnottieOne
11 ай бұрын
I looked into this a while back and am hoarding whatever i find. I was thinking of probably burning first and sifting the gold before doing acid. I dont have a forge, what would be a possible good option for burning, or should i just do acid all the way? 🤔
@sreetips
11 ай бұрын
The purpose of burning (incineration) is to remove oil or grease from the scrap. The material I had was very clean so I eliminated incineration step. Plus, and this is very important; the seller published the assay of those pins. Most pins are not this rich. That’s why I bought those, because I knew that I could dissolve the copper with hot dilute nitric and recover the gold foils. However, I relied heavily on my experience to pull this off. I’d advise anyone wanting to try this to do a small test batch before going all in. It looks easy but it’s not. And it’s dangerous. Those fumes will kill you. The reaction must be done in a fume hood. No way to safely do it otherwise.
@Craider79
6 ай бұрын
A small trick to cleaning foils off stuff like circuit boards or gold plated "smaller object" - which will reduce the "soak time" in the acid: Get a metal bucket with a metal lid (kinda sturdy). Here there are two versions. one is to just drill a hole, the other is to install a "power transfer thingy" (no clue what they are called in English. It's basically just a thing with a power drill bit (female part) on each end, with a mounting bracket in the middle so you can permanently use a power drill on one side and attach something else on the other side and having it isolated) In both cases you take a "round" toilet cleaning brush (the sturdier quality the better - they will break occasionally though - so don't get a really expensive one 😀) drill a hole into the shaft of the toilet brush, and then add a drill bit to the hole. I'm personally using a bit which is used for making "bores" for bolts in metal plates. It's good because it fastens into the hole really well and binds well when it bottoms out the pre-drilled hole. Now MAKE SURE to rinse off all the acid before doing this. The metal bucket will not be happy if you don't. dump a few handfuls (the more you add the harder it is to get it all and the more stress on the materials) into the metal bucket and put in some clean water. turn the "toilet brush" around though the hole in the lid slowly at first using a power drill with good speed control- and then go for a while at medium speed. Don't go full power since that will put more stress on the brush. This will make you able to get all the gold off much quicker - and it doesn't really make the cleanup that much dirtier.
@pixelpatter01
Жыл бұрын
You remarked on the dark motor oil color of the used AP solution, and I noticed it was exactly the same color as your Stannous Chloride test indicating gold. is there a possibility there is any Tin under those foils that dissolved in your HCl and made a batch of Stannous Chloride which is binding up some of your gold in that dark solution?
@m3sca1
Жыл бұрын
thats a question along the same line as my own, i was thinking the black acid would have gold in solution since the peroxide in HCl was used in another video to refine gold... but now you mention the stannous test and for sure there is tin in the solder and the acid provides the chloride so it makes sense that stannous chloride has formed and dropped some gold as black dust, but most of it went thru the filter, only a little got tipped off the top and not filtered... and the filters went in the AR so only a little bit got lost to the process. The big surprise was how stubborn the fingers were to hold onto the boards...
@hugglv8090
Жыл бұрын
@@m3sca1 I am sure some of the gold went into solution, it is correct to use car battery electrolyte instead of HCL ..
@scrappydoo7887
Жыл бұрын
@@hugglv8090 "car battery electrolyte" is just sulfuric acid and deionised water. It won't work
@hugglv8090
Жыл бұрын
@@scrappydoo7887 works great with H2O2
@scrappydoo7887
Жыл бұрын
@@hugglv8090 that's because you are making piranha solutions. It's extremely dangerous and not fit for this purpose
@redpanda9367
Жыл бұрын
Would it have dissolved the fibers faster if you switched out that acid mix for a fresh one after the second or third check?
@sreetips
Жыл бұрын
Possibly
@pedrorodriguez9709
6 ай бұрын
Great video I'm starting to get curious about trying it myself. I do collect scrap metal and electronic equipment, so this might be something to seriously think about. Could you provide a list of the chemicals used and their approximate quantities. Thanks for sharing your expertise.
@sreetips
6 ай бұрын
It’s all in the video. Watch it, take notes. Thank you.
@VendettaProspecting
Жыл бұрын
Man kinda nailed your estimated yield.
@Joe.Rogan.
Жыл бұрын
Wonder if anyone ever tried agitation and friction to help remove the stubborn foils from the fingers after waiting a couple weeks of soaking? Something like a perforated spinning drum to tumble them in to speed up the process. I know it's just an experiment but I'm super impatient with things like that so I can't help but think of ways to make it go faster haha.
@wgwells
Жыл бұрын
I was thinking the same (as I'm sure many others), and I do know that jewelry cleaning machines use ultrasound to vibrate things to clean it. I'm sure Sreetips has a jewelry cleaner but not sure if that would work on this scale.
@ToniThePerkele
Жыл бұрын
poormans version would be woodsander with bungee cords outside the bucket..
@canonicaltom
Жыл бұрын
A gold recovery washing machine :D
@caterinaporter1769
Жыл бұрын
@@ToniThePerkele - that’s funny. Have you ever watched the Canadian show Red Green? Your poor man’s version sounds like something Red Green would try, along with plenty of duct tape.
@benjaminhoagland8473
Жыл бұрын
Exactly what I was thinking. A tumbler would make short work out of this
@robbiee9548
11 ай бұрын
Curiously, you said that you should of used sulfuric acid to process the pins instead of nitric at first.... what would that be in consideration of amount, time and advantages/disadvantages? Thank you for your contributions to the field of precious metal refining. I respect your level of efficiency and precision.
@sreetips
11 ай бұрын
Sulfuric will dissolve the copper, but not the gold. A gallon of sulfuric is about $25. A gallon of nitric is about $100.
@vickielawson3114
6 ай бұрын
“Should’ve used” not “should of used”.
@robbiee9548
6 ай бұрын
NO@@vickielawson3114
@woodsmithbc
8 ай бұрын
Would the foil detach faster with a higher percentage of peroxide? Say 20% from a beauty supply.
@sreetips
8 ай бұрын
Possibly
@spokehedz
Жыл бұрын
So the goal is to dissolve the base metals off of the gold foils. But the gold protects the base metals from being directly exposed to the acid, and the solder mask is doing the same thing and is also not really bothered by the acid since I think it is polyester. I wonder if some physical damage like smashing them with a hammer/grinding the PCB material up in a garbage paper shredder would allow the acid to get at the base metals quicker. Don't think that incineration is the way, the stuff they make PCB with is pretty bad stuff when burned.
@frantiseklaluch6605
Жыл бұрын
Gold protects base metals from oxidation from normal enviroment and is there for better conductivity. Acid finds the way, as there are cuts in base metals, also whe cutting PCBs they bend and crack (I trimm fingers myself). Acid and bubles just need some time, that is all. Boiling could speed the process from weeks to hours, good for few fingers in oone day, but at this scale is patience better way...
@spokehedz
Жыл бұрын
I'm just wondering that if at the step where you cut the fingers off, would it be worth smashing them up at that time. You are already doing physical work to trim off the fingers, if the next step after that is to bash them with a mini-sledge hammer in a cotton bag for a minute or two, but it reduces the time in the bubbler--it might be worth it. An extra minute or two now, saves hours later? Sandpaper would also help, but it might introduce grit into the mix.
@frantiseklaluch6605
Жыл бұрын
@@spokehedz You know, you do not have to blow the bubbles by your mouth, or stand there and spin some wheel by hand. Acid works 24/7. Just wait. If you smash the fingers, then you have bunch of small bits of PCB, hard to divide from gold foils. The less small junk, the better. Patience man, patience...
@uwillnevahno6837
Жыл бұрын
$1000 (excluding time, materials, equipment, etc.) for 9.6 grams of gold currently valued at ~$560 OUCH
@insolentjaguar
Жыл бұрын
I just commented the same exact thing!
@vinnieboombatzmd3508
Жыл бұрын
Yes, I'd like it if he included the cost of chemicals and other consumables in the process along with his total hours labor at the end.
@The_Gallowglass
Жыл бұрын
Where do you get $1000? He said the first two bags were $100, altogether and the other two bags were $400 together, not each. He paid $500.
@The_Gallowglass
Жыл бұрын
@@insolentjaguar With the cost of two gallons of muriatic acid and the four bags he just about broke even.
@whatthefunction9140
Жыл бұрын
It's his hobby. You dont make money playing golf or camping or whatever you do with your time and money. Plus he gets you tube revenue and sells on eBay for above spot.
@shannondelcambre65
2 ай бұрын
Thank you for making this video for us. It was very educational and I am very much looking forward to seeing more of your video's in the future.
@sreetips
2 ай бұрын
Thank you
@TheStrangeHermit
Жыл бұрын
Had an idea for getting the foil off the fingers a bit faster. Ive seen these portable, pvc, travel-size laundry machines at the Box stores that are maybe 5-6 gallons. Could something like that be used to 'agitate' the parts as they soak in the muratic acid? The thing im looking at works with just pressurized jets, and an internal mesh basket inside that rotates. So there are very few moving pieces inside that could catch and jam.
@sreetips
Жыл бұрын
Yes, that may help. But the acid would quickly dissolve any metal that it can in contact with.
@Dr.GreenD17
Жыл бұрын
I pause the video once you weigh the fingers. You may not brake even. And my guess would 7 to 9 grams of gold. Thumbs up👍
@roberthayward9299
Жыл бұрын
Depends how you measure "break even". The gold won't pay for the fingers but the views of the video just might. Sreetips is demonstrating a modified process and many viewers will find it interesting. Income from the video may be enough to cover the overpriced fingers.
@adamtheninjasmith2985
Жыл бұрын
@@roberthayward9299 exactly. Plus knowing Kevin he's also getting enjoyment out it too and there's a ton of value in that. I don't think it's ever been about the money. Just the joy of doing it and spreading the knowledge 👍
@dennisflemming826
Жыл бұрын
Hi buddy , I have watched your channel four a long time and love it ! However when it comes to computer scrap , I feel you are missing some steps first priories ( stick the scrap in a tin in a fire with holes around the top of the tin ) next a ball mill mine is a rolling gas’s cylinder with steel bolus balls in it . I flush the carbon and fibre from the metal , a magnet removes the steel and I follow you from there. PS this requires more lead stripping . I pickup computer scrap at the local dump for around $ 2 Australian the copper is a important part of the deal , cheers
@scrappydoo7887
Жыл бұрын
You don't do that with gold fingers. All it does is creates more hassle. There's nothing to be gained from the milling of the fibre on the fingers. If you are running IC chips then burning and milling is required to free up the gold
@samphillips003
8 ай бұрын
Hey Streetips....what kind of pump do you use thatll run for weeks...ive burnt up a few cheapies dont wanna use my good ones......got something invetween?
@sreetips
8 ай бұрын
I bought those aquarium air pumps at the thrift store. They’ve last for years.
@samphillips003
8 ай бұрын
@sreetips figures...lol...I appreciate your videos..I love refining.
@roberthainline4552
8 ай бұрын
What liquid do you put on the filter paper to test for gold when it’s in solution?
@sreetips
8 ай бұрын
Stannous chloride testing solution.
@goldrefining
Жыл бұрын
Bama
@VendettaProspecting
Жыл бұрын
Lol let’s go gentleman
@rickydona919
Жыл бұрын
both of you gentlemen are amazing
@VendettaProspecting
Жыл бұрын
@@rickydona919 hey 💪👍
@rickydona919
Жыл бұрын
@@VendettaProspecting hey 💪💪
@spacecase22
11 ай бұрын
what do you do with the waste liquids (acid/drain water/solutions)? do you have to take them to a specialty place to dispose or do you just dillute heavily and pour down the sink?
@sreetips
11 ай бұрын
Waste treatment.
@spacecase22
11 ай бұрын
@@sreetips is that a place? or a method?
@windoc2
6 ай бұрын
Dear @sreetips, Im uneducated in chemistry, but i know a thing about mechanics, is some sort of minitur cementmixer a solution for you. A standerd where you can place your bucket on, in a 30- degree angle. While it rotates, the strips rub eachother, releasing the gold in a shorter amount of time.... take care
@sreetips
6 ай бұрын
That would help. But I’ve tried a new way with hot dilute nitric to release the foils. It works good and they are done in one day.
@rickrack4812
Жыл бұрын
After a while with the foils persisting to stick onto the substrate fiber and such, would it not be a good thing to somehow have a vibrator bring some motion to that perforated bucket you have while it's sitting there bubbling?
@sreetips
Жыл бұрын
Yes
@lylestavast7652
11 ай бұрын
could you accelerate the gold from boards by using the same baths but have that happening on a shaker table or rolling drum situation where they're forced to bump into each other and loosen up quicker ?
@sreetips
11 ай бұрын
Agitation would help
@baade6010
8 ай бұрын
2 questions, 1: why dont you agitate the fingers more in the acid ? wouldnt it speed up the process? and 2: Why cant you just melt down the fingers from the get go, wouldnt the gold sink to bottom of a casting?
@sreetips
8 ай бұрын
1) didn’t think of it and yes. 2) the gold foils are not pure gold and no, metals don’t separate when melted, they alloy.
@baade6010
8 ай бұрын
thanks for the reply, your videos are fascinating and inspiring and entertaining@@sreetips ps was imagining some kinda motor left running attached to something like a cam shaft
@NJFPV
Жыл бұрын
Thank you for finally rubbing them off by hand! I was getting anxiety! I would have done that at 24 hours, lol.
@hassanbazzi3545
Жыл бұрын
I never thought I will watch the whole video but it was very interesting and thank you for sharing
@glockumollie1230
9 ай бұрын
I was wondering if you could describe to me how to refine a LARGE QUANTITY of 40% Silver Kennedy halves and could the copper be recovered also or not.
@sreetips
9 ай бұрын
Those should not be refined. They contain a known quantity of silver minted by the United States government. If you try to dissolve them or “melt em down” then their value becomes questionable. There’s plenty of sterling silver out there at estate sales and resale shops. But if your dead set, then 40% Kennedy halves can be dissolved in nitric just like sterling silver can.
@ComteSt.Germain
7 ай бұрын
I'm totally inexperienced with this, though it is fascinating. Something that kept popping into my mind as I am watching this video is the thought that some sort of tumbler or agitation device (more than just a bubbler) that uses physical abrasion to assist in the removal of gold from the fingers would be beneficial in speeding this lengthy process up?
@sreetips
7 ай бұрын
Yes
@LD-hy1ps
5 ай бұрын
Is the 2-week-wait with the bubbler in HCl to separate the foils from the boards the reason why you say jewelry scrapping is much more profitable than computer scrapping in some of your other videos? It seems like it takes forever to get those foils separated.
@sreetips
5 ай бұрын
I switched to hot dilute nitric to release the foils. It’s done in a day.
@user-nl8tx5od1m
2 ай бұрын
couldn't you capture the silver from the soldering on the bottom of those boards also hence a double yield of precious metals? both have different melting points but idk how or what to use to separate gold out & silver out assuming at different stages of the acid reactions ? that would be cool to see that processtoo
@sreetips
2 ай бұрын
There’s no much silver in those. Mostly base metals under the gold foils.
@PaulDinwiddie
Жыл бұрын
Hello Sreetips, have you made a video on how you built your fume hood? I am ready to build one; but would like to see how you made yours.
@sreetips
Жыл бұрын
I bought mine on eBay. Please remember to get one that’s suitable for acid digestions, no metal fasteners or parts. I’d recommend Salare Inc located in North Carolina. Tell them sreetips referred you.
@PaulDinwiddie
Жыл бұрын
@@sreetips Thank you!
@Bubblez68
5 ай бұрын
would setting this on or in an ultrasonic help loosen or release the foils?
@sreetips
5 ай бұрын
Possibly
@hoodwinker1964
11 ай бұрын
The first half of the video I was on my way out to start scrapping used electronics,the second half I said screw that 😂.....Cool content regardless..Thanks
@LilMissMurder3409
5 ай бұрын
Fascinating video. How about sealing the acid bucket and rotating it on a motorized pair of rollers or other contraption and turning it into a tumbler? Seems some mechanical abrasion might save you a lot of time?
@sreetips
5 ай бұрын
Agitation helps
@roberttanguay8532
Жыл бұрын
Great video on the gold recovery process, however, when it comes to a monetary factor, it is definitely not economically viable unless you can Drastically reduce your costs and that includes Your time. With your original costs just for bags of circuit board trimmings, you needed at Least 1oz of gold.
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