Thanks very much for your valuable time and lessons. I have been watching your channel growing for years. PGM recovery and refining are the last secrets for me to unlock. You just helped me, again. Thanks. Your simple methods and explanations are easy to understand.
Nice! I look forward to seeing the yield. I'm glad you managed to do the recovery without the cat knocking over the container like what happened to Cody. :D
Oh I love Cody's channel, I think he's a man of genius and a lot of fun too, although he can sometimes complicate things a lot. I hope that one day my channel will be half as popular as his! With his recordings, I started learning about refining a few years ago!
Sreetips got them from Ebay and recovered almost nothing, though he said he got over an ounce from one Cat in the past but would not tell which car it came from. So many secrets so little help. Thanks. more details and amounts, please.
Some people steal things some people steal souls. Some people are pedophiles what’s the difference between these?. What is worse pedophilia or catalytic conveyer theft. Is Jeff Bezos a thief? Sure he is, how about the pope? Of course. Donald trump? No doubt. Do your parents belong together? Should you have been conceived? Who is your woman do you belong with her? Thieves are all people. Stealing things is no different than stealing someone’s girl. Anytime you do something wrong it’s thievery. Are you a bitch? Why? You are stealing estrogen
Great video again, thank you. And I am glad that you have finaly some sponsor! Even better that they are company which offers refining equipment, so good relation to your videos :)
Awesome video dusan. I have leached some substrate before with chlorine, but never crushed. I think I may put a couple in my ball mill and see how it works. I'll start with nitric leach to remove palladium, the aqua regia to separate platinum. Thanks for the videos.
I was thinking of doing it myself, but I still decided on Aqwaregia. I wanted to spend as little nitric acid as a lot of people complained that it was very expensive to pay for them.
Omg! I flunked algebra and never balanced a checkbook! This is CRA CRA! I loved watching the magic! Thank you for showing us old school people some chemistry! Amazing!!!!🤩🤩🤩🤩
@@999DusanGoldrecovery I would like more information on doing what you are doing, and I need to establish connection with you for I am doing what you do here in the US Thanks!!
How long did this whole process? Was it several days, weeks, or months for this whole process to occur? Just now seeing your video, for the 1st time in 2023. Can you please link your, "Part 2" process so, we can see what your other step is. Thank You.
Bravo buraz nadam se da si mi dobro kao i tvoji najmiliji i da ovu izolaciju pezivljavas bez problema. Cekamo svaki tvoj video i rado ih gledamo. Nadam se da cu jednog dana uspeti da izvadim svoj prvi gram zlata(i nadam se da cu imati tvoj savet i pomoc) i da sve ovo sto sam skupio nece ostati u ormarima. Ziv nam ti bio i tvoji najdrazi i puno pozdrava iz Krusevca.
Hvala ti druze,nadam se da ces uspeti u svom naumu.Izolacija je dobro dosla ionako smo svi poceli da jurimo kao muva bez glave.Samo je bitno da zdravlje ostane netaknuto,bice svega ostalog!Veliki pozdrav za Krusevac!
Thanks buddy, I try to cover as many different things as possible on my channel, if you have any ideas feel free to post in the comments what you would like to see and if I have the opportunity I will get it!
@@999DusanGoldrecovery I do have some questions I've actually encountered myself over the years: 1- which metal, not the ferrous type, I'm talking about the metal trident shaped pieces of metal that are stacked that build up some types of transformers ? Is it simply steel, or tin ?
If I have aqua regia contains gold a d platinum could I get the gold with SMB first a d then get the platinum with aluminium later or the is a problem?
I'm kind of curious why the hydrochloric acid isn't used first and followed by aqua regia? I'm kind of wondering if very small amounts of precious metals aren't dissolved by hydrochloric acid alone. I remember doing tests with just straight hydrochloric acid and gold leaf. Over a couple days the gold leaf dissolved. Is it because some of the product will dissolve and just hydrochloric acid? It would be a pretty good way of dissolving some of the other crap otherwise
Just for hobby i play with AUDI A2 1.6 catalytic converter.. it have hard fragile net kinds metals .. I dissolved a few parts in HCL+HNO3 but Tin chloride test showing nothing.. is it possible catalytic converter without any precious metals?
Question: for ANYONE who has an answer! (Yes, I'm just getting into recovery and refining. After 3 years of studying) The aluminum used to drop the platinum, I'm assuming it's a high grade aluminum. Can I get that by melting my own bars and getting all the dross off before the pour??? Was it a bit off a relief to find it only had platinum (because only one thing to focus on)? Or would it not have mattered much on the process? Have a GREAT Day!!!
You can use aluminum foil. If you melt and pour aluminum take a small drill bit and drill into it. Then use the drill shavings to drop. Denser larger surfaces can cause a boil over pretty quick. Add small amounts of shavings or aluminum foil pieces works great. Just know if you have iron, copper, tin, silver, gold or platinum group metals aluminum will drop them all out of solution. So know exactly what you have before using aluminum.
Aluminium from video is high grade ,im wor in factory for the manufacture of wagons for trains so i get this bars from waste section and purity is 99,9%. When it comes to catalysts, there are no base metals in them besides precious metals so that it can easily be dropped with Aluminum without fear of being soiled by other common metals.And yes u can use foil.Thanx for watching mate.
You mean the dirt from the catalyst? No, nothing is lost. Basically if the catalyst is clogged then some metal can be retained in the openings but when clean like this, all the worn metal has already leaked through the exhaust, and the dirt is a huge problem when filtering, because the oils and fats they contain!
Because mainly in gold and silver, there is always some base metal that Aluminum would probably break down and contaminate the metal, while in the catalyst only the precious metals are in solution so that contamination is minimized.
Actually it’s real purpose is scrubbing for radioactive particles in the exhaust you might want to invest in a $50 Geiger counter people die all the time from cancer messing with it
Total baloney!The only type of radiation that can be emitted by some cat converters comes from a little content of thorium oxide in ceramics itself but it is so negligible that you will never receive a lethal dose from them no matter how much you work with them!Yet I can tell you that vast majority of those cats containing that stuff are still too weak emitters which are much less radioactive than even a damn thoriated 2% TIG electrodes!
i did not find any video about rhodium. i never saw any video about rhodium. can you show to us, how to recover the rodium? or some one reading this.comment can send a link for a video about rhodium recovery??
I was hoping this catalyst would have Rodium but in the end it turned out to be just Platinum. I'll try to make a video with one containing Rodium but first I have to find it, a lot of FAP filters from new vehicles contain Rodium.
Stealing from the wrong vehicle owner and you'll get for what you will 😂 Edit: always wanted to use that line. Original pink panther episode. (Diamond mine episode) must watch!
Not oal,mostly new one have conwerte bu older one not oal.Peugoet vehicles have best yeild ,manufacturing from 2001 to new ones.Some Ct hawe Platinum and Rodium,some only Platinum like this one,some Palladium,maybe oal three metal,newer is the same.
If it takes that long to get the metal out and it's not that much metal, what makes it worth stealing those things in the first place. It doesn't seem worth all that trouble to go through.
Most converter thieves will sell to a recycler, who then sells it to a company which recovers the metals, who then sells the recovered metals to a refiner. Sometimes there are more middle companies depending on who is starting off that chain. Everyone gets their cut, the converter thieves will get the smallest dollar amount, but they are also stealing them so it is pure profit, whether it is 50 dollars or 200 dollars for each one. This is why thieves will often target certain vehicles and not others, because they know which converters have the most PGMs inside (i.e. which ones are more valuable). If you think about it that way, a thief could potentially steal 5-10 converters in a couple hours, sell them for 100-200 each, and make between 500 to a thousand per hour of time invested.
Acting clueless is not a good way to disagree with someone. This isn't beautifully refined metal that you can sell to laboratories. I was giving that price as a reference. People who steal these are not investing a dime. They will get street prices for the material that they recover. It is still profitable for those who would rather be parasites than get an honest job. Are there other facts of life you need explained or will that be all for now?
No need to crush these. All the PGMs are on the outer layers not in the actual substrate. Soaking will take less time and chemicals not to mention WAY easier filtering. I've found CATS to be too much of a hassle and potential health hazard so I've stopped dealing with them but I have always found it better to soak than to crush. They aren't like mlccs where the metals are buried deep inside. As long as the solution completely covers it and no air bubbles all the PMs will come free.
That they are very dangerous for work and that is why I personally don't do them too much. The reason I grind them is the amount of acid that is required to cover the substrate.And my opinion is that you still need to heat the solution well so that Platinum is more easily absorbed. Now I'm just doing a full substrate test with bleach, I want to see if there is still some metal left on the substrate after that.You will see result in some of next videos mate!
Proses Makina should give you a couple of machines to try and maybe a tractor!
Hhahha that will be nice,small mashin,not tractor i have one.Nice to see you here mate!
InstaBlaster.
Dusane moze li neki kontakt
ah man ya gotta show the melt. Makes watching all the chemistry worth it in the end.
That's the most straightforward way to process catalytic converters I have seen on the internet. Great job!
yeah, super straightforward if you wanna see what powdered engine smoke looks like lol Everyone should try that at home 🤣🤣🤣🤣
Thanks very much for your valuable time and lessons.
I have been watching your channel growing for years.
PGM recovery and refining are the last secrets for me to unlock.
You just helped me, again.
Thanks.
Your simple methods and explanations are easy to understand.
Most excellent my friend. I know you are aware of the risks of Platinosis, be safe. I wish you a high yield & good health.
I im.Thanx mate.Yeild soon i need to finish secon part of this video,i leave one part to proces with bleach and i ceep sug to melt it at once!
Nice! I look forward to seeing the yield. I'm glad you managed to do the recovery without the cat knocking over the container like what happened to Cody. :D
Oh I love Cody's channel, I think he's a man of genius and a lot of fun too, although he can sometimes complicate things a lot. I hope that one day my channel will be half as popular as his!
With his recordings, I started learning about refining a few years ago!
Cody who can one of you post a link to his channel ??
@@999DusanGoldrecovery add Cody’s TH-cam link
@@BeefZupreme Codyslab his channel is pretty popular th-cam.com/play/PLKhDkilF5o69PqPy-oMCCSgEc7JYqDVTZ.html
Sreetips got them from Ebay and recovered almost nothing, though he said he got over an ounce from one Cat in the past but would not tell which car it came from. So many secrets so little help. Thanks. more details and amounts, please.
Great video yah, nice way to teach thieves more reasons to steal more.
so this is where all the thieves hang out
What is a theif? What is stealing?
Some people steal things some people steal souls. Some people are pedophiles what’s the difference between these?. What is worse pedophilia or catalytic conveyer theft. Is Jeff Bezos a thief? Sure he is, how about the pope? Of course. Donald trump? No doubt. Do your parents belong together? Should you have been conceived? Who is your woman do you belong with her? Thieves are all people. Stealing things is no different than stealing someone’s girl. Anytime you do something wrong it’s thievery. Are you a bitch? Why? You are stealing estrogen
Yes.
I just saw that people steal them and i was curious exactly how much metal is in them
@@karvast5726 most thieves dont do this, they sell them to scrap yards who pay well because of the noble metal content.
Life is like a bucket of catalysts… you never know what you’re gonna get.
I would have loved to watch the whole video. Kept having to get up and dance to the super disco musical.
came for the catalytic converter platinum recovery, stayed for the music
Sei un grande 🙌 grazie mille, un saluto dall'Italia 🇮🇹
thank you! I am going to use this for legal purposes only!
I finally figured it out my friend and I appreciate your videos so much and thanks for the lessons...
Great video again, thank you. And I am glad that you have finaly some sponsor! Even better that they are company which offers refining equipment, so good relation to your videos :)
Yes of course it is good that we are dealing with the same materials. The company is excellent for every recommendation.
Thank you for sharing your knowledge and experience
Awesome video dusan. I have leached some substrate before with chlorine, but never crushed. I think I may put a couple in my ball mill and see how it works. I'll start with nitric leach to remove palladium, the aqua regia to separate platinum. Thanks for the videos.
I was thinking of doing it myself, but I still decided on Aqwaregia. I wanted to spend as little nitric acid as a lot of people complained that it was very expensive to pay for them.
@@999DusanGoldrecovery I understand. Ar makes it faster and cheaper just a little less purity
@@999DusanGoldrecovery what was those metal rods that you placed in beaker after the urea?
Omg! I flunked algebra and never balanced a checkbook! This is CRA CRA! I loved watching the magic! Thank you for showing us old school people some chemistry! Amazing!!!!🤩🤩🤩🤩
Hi dear
I'm be waiting for long time for this video
big thanks for your useful video
Thanx freind im glad you love it!
Lmao bots....
congrats on the sponsor my friend
Thanx mate!
Dusan I see you coming up with sponsors! get your money.
Thanx mate ;) This sponsor is amaizing and is legit!
Cool you have a sponsorship for this video, thanks to Proses Makina
Yeap,this is a second video that im doing for them.Exelent company!
@@999DusanGoldrecovery I would like more information on doing what you are doing, and I need to establish connection with you for I am doing what you do here in the US Thanks!!
No need to cut them open, knock out the ceramic material with a pry bar ect and a hammer it breaks up easy.
Good video I cant wait to see how much you got from it, and I hope you took serious precautions so not to get Platinosis
Yes i im brother,thanx for care mate!
Kool stuff, MAN!
How long did this whole process? Was it several days, weeks, or months for this whole process to occur?
Just now seeing your video, for the 1st time in 2023.
Can you please link your, "Part 2" process so, we can see what your other step is.
Thank You.
Hace como 10 años miraba mucho estos tirados en la basura
thx for teaching us how to do this.
my neighbor is not too happy though.
Great video and explanation, thanks!!
safety man "sir you need gloves and proper ppe for grinding etc"
this guy "fuck outta here"
lol good info ty for the vid
How many grams of pure platinum did you recover?
wow, you posted this a year ago and he still hasn't answered. This is the most important question here.
Gonna be wearing Proses Makina hat and t-shirt in the next video.
Maybeeeee :)
Bravo buraz nadam se da si mi dobro kao i tvoji najmiliji i da ovu izolaciju pezivljavas bez problema.
Cekamo svaki tvoj video i rado ih gledamo.
Nadam se da cu jednog dana uspeti da izvadim svoj prvi gram zlata(i nadam se da cu imati tvoj savet i pomoc) i da sve ovo sto sam skupio nece ostati u ormarima.
Ziv nam ti bio i tvoji najdrazi i puno pozdrava iz Krusevca.
Hvala ti druze,nadam se da ces uspeti u svom naumu.Izolacija je dobro dosla ionako smo svi poceli da jurimo kao muva bez glave.Samo je bitno da zdravlje ostane netaknuto,bice svega ostalog!Veliki pozdrav za Krusevac!
What’s all this work worth ? So much time for one cat converter. Is the time worth the money ?
One kg catalytic converter how much platinum & paladiaum coming
Great job but separation of all is missing in this video. Live long!
Oh right on mate !! Been hoping you would cover catalytic converters in a video sometime - nice work my friend !!! Cheers !!!
Thanks buddy, I try to cover as many different things as possible on my channel, if you have any ideas feel free to post in the comments what you would like to see and if I have the opportunity I will get it!
@@999DusanGoldrecovery I do have some questions I've actually encountered myself over the years:
1- which metal, not the ferrous type, I'm talking about the metal trident shaped pieces of metal that are stacked that build up some types of transformers ? Is it simply steel, or tin ?
awesome seems easy 👍😀👍
What are the metal rods you use to precipitate the platinum back into a solid?? I’ve seen people using copper, but that didn’t look like copper?
As stated, ALUMINUM.
Nice video sar awesome very very nice and next part full process and Palladium rhodium recovery with melting process please sir
Will be soon!
Ape sar kia yeh bala vijnis krte ho eska kia ret he ape hme btado
Petrol 3500 se leke 4000 par kg dijal 1500 par kg
@@anisahemad6968 5000 pr kg main le lunga petrol
Apna mobil no bheje
If I have aqua regia contains gold a d platinum could I get the gold with SMB first a d then get the platinum with aluminium later or the is a problem?
Bravo Dule
Hvala druze.
I'm kind of curious why the hydrochloric acid isn't used first and followed by aqua regia? I'm kind of wondering if very small amounts of precious metals aren't dissolved by hydrochloric acid alone. I remember doing tests with just straight hydrochloric acid and gold leaf. Over a couple days the gold leaf dissolved. Is it because some of the product will dissolve and just hydrochloric acid? It would be a pretty good way of dissolving some of the other crap otherwise
Just for hobby i play with AUDI A2 1.6 catalytic converter.. it have hard fragile net kinds metals .. I dissolved a few parts in HCL+HNO3 but Tin chloride test showing nothing.. is it possible catalytic converter without any precious metals?
interesting....but the music is a pain in the ass
Thank you brother 🙏
what was the bar you used to precipitate==thank you
Aluminium. High grade!
999 dusan which type of licquid or acid u used for boiling the mixture
Aqwaregia! Hcl - Hydrochloric acid and Nitric acid. Ratio 3/1 or 4/1.
I like ur videos ,and im exited to ur next video on this topic .please write text in english on your videos ( text like detail of ir experiment
Bhaijaan please help me
When combing is completely leached the ceramic will run almost white
Is it worth all the work?
What are the metal bars you added to drop the platinum from solution
Aluminium!
Question: for ANYONE who has an answer! (Yes, I'm just getting into recovery and refining. After 3 years of studying) The aluminum used to drop the platinum, I'm assuming it's a high grade aluminum. Can I get that by melting my own bars and getting all the dross off before the pour???
Was it a bit off a relief to find it only had platinum (because only one thing to focus on)? Or would it not have mattered much on the process?
Have a GREAT Day!!!
You can use aluminum foil. If you melt and pour aluminum take a small drill bit and drill into it. Then use the drill shavings to drop. Denser larger surfaces can cause a boil over pretty quick. Add small amounts of shavings or aluminum foil pieces works great. Just know if you have iron, copper, tin, silver, gold or platinum group metals aluminum will drop them all out of solution. So know exactly what you have before using aluminum.
@@larryharris6998 Thank You very much for all the info!!!
Aluminium from video is high grade ,im wor in factory
for the manufacture of wagons for trains so i get this bars from waste section and purity is 99,9%.
When it comes to catalysts, there are no base metals in them besides precious metals so that it can easily be dropped with Aluminum without fear of being soiled by other common metals.And yes u can use foil.Thanx for watching mate.
@@999DusanGoldrecovery Thank You very much for your response!!
@@999DusanGoldrecovery Thank You very much for your response!!
When all separated does it mean it’s bad?
About 20 posters asked the same question: How much money did you get in the end? He never answered...
It taste so good it will almost kill you. Try our new chemical lattes *limited time offer at selected retailers
Good job! Good 👍
I wonder if you lost a ton of precious metals by rinsing that out instead of processing it? just curious?
No.
You mean the dirt from the catalyst? No, nothing is lost. Basically if the catalyst is clogged then some metal can be retained in the openings but when clean like this, all the worn metal has already leaked through the exhaust, and the dirt is a huge problem when filtering, because the oils and fats they contain!
What if denox is not done only carbonite ph up for pools and zinc but no pgm powder
Gloves, respirators, safety anything?
Could you use aluminum to do the drop after recovering the silver from mlcc?
Yes,but you drop nickle and other metals too!
999 Dusan thank you.
Would copper be a better choice?
Slutions and solutions,but what acids have you used?
hi my friend. l thank almuneum or zinc are used to recover gold and palladium so why don't you use it in recovery. thanks
Because mainly in gold and silver, there is always some base metal that Aluminum would probably break down and contaminate the metal, while in the catalyst only the precious metals are in solution so that contamination is minimized.
Ahhh damn. Where is the finish. That was awesome bro
Actually it’s real purpose is scrubbing for radioactive particles in the exhaust you might want to invest in a $50 Geiger counter people die all the time from cancer messing with it
Total baloney!The only type of radiation that can be emitted by some cat converters comes from a little content of thorium oxide in ceramics itself but it is so negligible that you will never receive a lethal dose from them no matter how much you work with them!Yet I can tell you that vast majority of those cats containing that stuff are still too weak emitters which are much less radioactive than even a damn thoriated 2% TIG electrodes!
How much per kg catalytic converters price ? Give me detail different type of car catalytic converters price?
aprox 150 dolars from one catalitic filters...
Hello how long time less you the catalitic converter in aqua regia
If 10 to 12 metal present in one ore so how can separate? Like platinum, neodymium, rhodium, cerium etc
How much would that cost? And who buys this?
What id denox is not done only carbonite ph up for pools and zinc but no pgm powder
Hello . What do you mean by VREA ? What is its chemical name?
And you used aluminum instead of zinc?
Am I waiting for your answer
thank you
Hy bro
Appne samadhan me jo Rod dali thi wo konsi dhatu ki thi
Ripley dijiyega
Thanks brother learned a lot from watching u videos
Good video
What was the amounts you got.?
I own a muffler shop u guys don’t know how many customers I get a day dealing with stealing catalytic converter
Dang is there a video of you turning that slag into a bar?
I'm curious as to whether if you spelled "process" correctly in the thumbnail, you would get more views...
Naaa
@@fishfire_2999
I hear you, not worth it. 🦾🚜🎮🤑
Rhodium is @ $20,000 an ounce. also in cats and way more valuable then platinum or palladium, do you not recover that also?
Which part of my kitty do I recover this in? 🤔
Ok güerito grasias desde México soy tu suscriptor dios te bendiga saludos
i did not find any video about rhodium. i never saw any video about rhodium. can you show to us, how to recover the rodium?
or some one reading this.comment can send a link for a video about rhodium recovery??
I was hoping this catalyst would have Rodium but in the end it turned out to be just Platinum. I'll try to make a video with one containing Rodium but first I have to find it, a lot of FAP filters from new vehicles contain Rodium.
@@999DusanGoldrecovery very thanks. i will see the video certainly.
What a residu contains after Regia ..? Only waste or A some Another PGM..?
Spark plugs have platinum.
How much do they weigh on ?
Do you think that there are pgm metals in potentiometers?
Yes,depens of manufactruring and products.
Bro Kahan se ho aap
Hi, if there were both palladium and platinum , then how would u have separated them?
Add dimethylglyoxime, palladium will separate as a yellow precipitate. Leaving just platinum in solution.
@@kieranodea771 good
Excelente.
Thanx!
Stealing from the wrong vehicle owner and you'll get for what you will 😂
Edit: always wanted to use that line. Original pink panther episode. (Diamond mine episode) must watch!
Where do you sell the precious metals at?
They're pebble sized you could probably put them right into a box and sell in eBay.
Anyone think I could get enough platinum from the converter on my 95 civic to make a ring?
I was waiting for the melting stage 🥲
are all car content these materials
Not oal,mostly new one have conwerte bu older one not oal.Peugoet vehicles have best yeild ,manufacturing from 2001 to new ones.Some Ct hawe Platinum and Rodium,some only Platinum like this one,some Palladium,maybe oal three metal,newer is the same.
Sir catalytic converter platinum recover use all chemical name sir please reply me
Nice video, what metals sticks did u use towards the end after urea to precipitate the platinum?
Kamran Bhai assalamualaikum
Bhai aap ki madad ki zarurat h please reply zaroor de
Aluminium plate
I want to buy who saling this catalytic convert per kg how much usd?
How much per kg
Music was very annoying in this video. Otherwise, great video. Thanks for sharing.
Made in Turkey 👍👍
🎉😊
Valla iyi arttı paladyum platinum güzel para getirir
Is it all car catalytic converter is same metal?
Does Anybody know the level of Backpressure from a Catalytic Converter ?
If it takes that long to get the metal out and it's not that much metal, what makes it worth stealing those things in the first place. It doesn't seem worth all that trouble to go through.
Might have something to do with the fact that platinum sells for $1000 an ounce. Just a guess. 🤷
Most converter thieves will sell to a recycler, who then sells it to a company which recovers the metals, who then sells the recovered metals to a refiner. Sometimes there are more middle companies depending on who is starting off that chain.
Everyone gets their cut, the converter thieves will get the smallest dollar amount, but they are also stealing them so it is pure profit, whether it is 50 dollars or 200 dollars for each one.
This is why thieves will often target certain vehicles and not others, because they know which converters have the most PGMs inside (i.e. which ones are more valuable).
If you think about it that way, a thief could potentially steal 5-10 converters in a couple hours, sell them for 100-200 each, and make between 500 to a thousand per hour of time invested.
@@aviandragon1390 Why don't you just buy a converter and take the platinum out and sell it for a profit?
Acting clueless is not a good way to disagree with someone. This isn't beautifully refined metal that you can sell to laboratories. I was giving that price as a reference. People who steal these are not investing a dime. They will get street prices for the material that they recover. It is still profitable for those who would rather be parasites than get an honest job. Are there other facts of life you need explained or will that be all for now?
No need to crush these. All the PGMs are on the outer layers not in the actual substrate. Soaking will take less time and chemicals not to mention WAY easier filtering. I've found CATS to be too much of a hassle and potential health hazard so I've stopped dealing with them but I have always found it better to soak than to crush. They aren't like mlccs where the metals are buried deep inside. As long as the solution completely covers it and no air bubbles all the PMs will come free.
That they are very dangerous for work and that is why I personally don't do them too much. The reason I grind them is the amount of acid that is required to cover the substrate.And my opinion is that you still need to heat the solution well so that Platinum is more easily absorbed. Now I'm just doing a full substrate test
with bleach, I want to see if there is still some metal left on the substrate after that.You will see result in some of next videos mate!