Author Topic: Goodies on ebay disguised as scrap  (Read 16365 times)

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Offline daqqTopic starter

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Goodies on ebay disguised as scrap
« on: April 29, 2015, 11:14:28 am »
While looking for something else I came upon this section of ebay:

http://www.ebay.com/sch/Scrap-Recovered-Gold-/162134/i.html

Basically it's various scrap, but there are some interesting items for those who know what they are looking at/for:

HP boards:
http://www.ebay.com/itm/39-HP-BOARDS-WITH-GOLD-TRACES-ON-BOTH-SIDES-10-POUNDS-HIGH-YIELD-/191567240966?pt=LH_DefaultDomain_0&hash=item2c9a4c1f06

Mil boards:
http://www.ebay.com/itm/Vintage-Collectible-Military-Board-/181705105142?pt=LH_DefaultDomain_0&hash=item2a4e77def6
http://www.ebay.com/itm/ASPRO-VME-Array-Memory-25500-3418606-003-1-3418205-001-101-Says-Boeing-D-SG-/111640002719?pt=LH_DefaultDomain_0&hash=item19fe43409f


Goodies for the RF connonsuer:
http://www.ebay.com/itm/CARDS-6-FOR-HIGH-GOLD-CONTENT-RECOVERY-5-1-2-x-4-1-4-1-2LBS-/111651143023?pt=LH_DefaultDomain_0&hash=item19feed3d6f

Great wall tiling:
http://www.ebay.com/itm/Gold-recovery-over-23-Pounds-of-Sun-CPUs-/371295066207?pt=LH_DefaultDomain_0&hash=item5672e9185f

Probably FPGA or similar dev/test boards:
http://www.ebay.com/itm/450lb-Circuit-Telecom-Server-Test-mother-Finger-Boards-Scrap-Gold-Recovery-NR-/131494473477?pt=LH_DefaultDomain_0&hash=item1e9dae6f05


Misc:
http://www.ebay.com/itm/Super-Computer-part-Electronic-Gold-Scrap-Looks-Expensive-/171745185453?pt=LH_DefaultDomain_0&hash=item27fccf8ead
http://www.ebay.com/itm/Two-Hitachi-main-frame-system-boards-Scrap-CPU-for-gold-recovery-made-in-1999-/181724455700?pt=LH_DefaultDomain_0&hash=item2a4f9f2314

I think it might be interesting to some of the locals... Damn, if I had money to spare for more toys...

Note: I have no relation to the sellers.

David
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Offline Whales

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Re: Goodies on ebay disguised as scrap
« Reply #1 on: April 29, 2015, 11:29:11 am »
"Super Computer part? Electronic Gold Scrap - Looks Expensive!"
It'd be interesting to see under the milled pressure chamber.  RF amplifiers?  Processor?  Bare dies exposed directly to coolant?


Offline SeanB

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Re: Goodies on ebay disguised as scrap
« Reply #2 on: April 29, 2015, 08:10:19 pm »
Likely absolutely nothing, as it is clearly marked as a seal integrity test board. Only things there are the nice pressure sensor and the schraeder valve. It will have a solid top layer like the bottom of ENIG plate.
 

Offline marshallh

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Re: Goodies on ebay disguised as scrap
« Reply #3 on: April 29, 2015, 09:59:10 pm »
That "telecomms" board is actually a set of test/serdes characterization and development boards for the recently-defunct Tabula corp which aimed to bring out new FPGAs. Basically, by using time division multiplexing on the LUTs with a faster clock you could increase the capacity by an order of magnitude.
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Offline helius

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Re: Goodies on ebay disguised as scrap
« Reply #4 on: April 29, 2015, 10:47:07 pm »
It's unlikely that they still work after being thrown around like that. I'd love to have a working one.
 

Offline daqqTopic starter

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Offline dmills

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Re: Goodies on ebay disguised as scrap
« Reply #6 on: April 04, 2018, 05:08:58 pm »
What a truly odd little corner of Ebay!
Particularly so as some of what they are selling is almost certainly worth far more if you DONT recover the gold!

I still think the prices are insane for scrap there, the gold plating is just never that thick.

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Offline DC1MC

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Re: Goodies on ebay disguised as scrap
« Reply #8 on: April 04, 2018, 06:58:07 pm »
Certainly worth more than $8:

https://www.ebay.com/itm/Gold-Scrap-Recovery-100g-Gold-Plated-Connectors/392009904441

Holly shit, I wish the shipping will be less in DE, but whoever buys them, if they don't have some strange flaw will make at least 3 times the money.

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Offline bitseeker

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Re: Goodies on ebay disguised as scrap
« Reply #9 on: April 04, 2018, 07:19:52 pm »
The PCB- and panel-mounted stuff might be nice. The hacked off, crimped cable connectors less so. Yeah, what a nifty little corner of eBay.
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Offline daqqTopic starter

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Re: Goodies on ebay disguised as scrap
« Reply #10 on: April 06, 2018, 10:11:06 am »
Quote
Particularly so as some of what they are selling is almost certainly worth far more if you DONT recover the gold!
Yeah, I almost cried when one guy I know told me what kind of test equipment he "recycled". He almost cried when I sent him a few ebay auctions and price estimates on how much similar gear was selling for these days. So I guess we're even.
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Offline daqqTopic starter

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Offline thm_w

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Re: Goodies on ebay disguised as scrap
« Reply #12 on: February 05, 2020, 10:21:17 pm »
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Online tooki

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Re: Goodies on ebay disguised as scrap
« Reply #13 on: February 06, 2020, 01:05:25 am »
One of IBMs chunkier MCMs, a nice piece into any collection:
https://www.ebay.com/itm/22-x-IBM-Power6-Processor-Ceramic-CPU-for-Collection-or-Gold-Scrap-Recovery/184153486396?hash=item2ae067343c:g:8Q8AAOSw2OVeMywb
https://www.ebay.com/itm/10-x-IBM-Power6-Processor-Ceramic-CPU-for-Collection-or-Gold-Scrap-Recovery/184153482884?hash=item2ae0672684:g:dmMAAOSw5G9eMyt1
Surely those don't contain anywhere near as much gold as you could buy for that price. I am totally OK with the price for them as collectors' items, but for gold recovery, there's no way that is worthwhile, right??

(For context, right now, gold is about US$50/gram. Given how thin the gold platings are, I doubt there's 11g of gold in those 22 CPUs. And that's if somehow the gold recovery process were free, which it's not.)
 

Offline amyk

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Re: Goodies on ebay disguised as scrap
« Reply #14 on: February 06, 2020, 02:43:19 am »
Cool connector
https://www.ebay.com/itm/20-PCS-93-gram-rf-connectors-for-gold-recovery-scrap-any-use/372399637169
Factory rejects, or just someone clueless who  came across them and doesn't know what they are?
 
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Offline Vgkid

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Re: Goodies on ebay disguised as scrap
« Reply #15 on: February 06, 2020, 04:48:41 am »
What type of connectors are those?
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Offline daqqTopic starter

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Re: Goodies on ebay disguised as scrap
« Reply #16 on: February 07, 2020, 09:19:01 pm »
Cool connector
https://www.ebay.com/itm/20-PCS-93-gram-rf-connectors-for-gold-recovery-scrap-any-use/372399637169
Factory rejects, or just someone clueless who  came across them and doesn't know what they are?
The latter is fairly common actually.
Quote
Surely those don't contain anywhere near as much gold as you could buy for that price. I am totally OK with the price for them as collectors' items, but for gold recovery, there's no way that is worthwhile, right??
Not sure about those particular ones, but there are ones (such as Pentium Pro) that are reported to have even a gram a piece. See: http://www.ozcopper.com/computer-cpu-gold-yields/
It's unlikely that the newer IBM MCMs have such a high gold content though. I would like to know :)
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Offline daqqTopic starter

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Offline helius

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Re: Goodies on ebay disguised as scrap
« Reply #18 on: February 19, 2020, 12:00:03 am »
The part number (21-01170-01) is from Digital Equipment Corporation (DEC), which had factories near to the item's location, in Maynard and Marlborough, Mass. I have not seen that part before, and it doesn't appear to be indexed by G**gle anywhere.

My wild-ass-guess would be that it has something to do with the VAX 9000 (Aquarius), which was a VAX supercomputer with vector extensions. The mezzanine connector looks like a FCI Meg-Array 10022671. These chips are probably not usable by breaking bond wires due to rough handling.

Incidentally, your "divide by cucumber error" sig is relevant to DEC microcircuits. The engineers there published a joke paper about "organic light emitting materials" in which they stuck electrodes into a pickle. That inside joke became the code number for Alpha CPUs, which were numbered EVxx for "Electro Vlasic" (Vlasic is a brand of pickle). EV also could stand for "Extended VAX", but the joke explanation for the name was preferred.
« Last Edit: February 19, 2020, 12:08:55 am by helius »
 
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Offline daqqTopic starter

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Re: Goodies on ebay disguised as scrap
« Reply #19 on: February 19, 2020, 09:28:45 pm »
I just wanted to know what it was as it looked really cool. Damn, I would probably buy one if there was shipping to Slovakia.

The guy released some new photos of the devices ( https://www.ebay.com/itm/Gold-Recovery-Ceramic-Chip-Gold-Bond-Wires-Brazing-Pins-2Lbs-Scrap-Refine/184176288713?hash=item2ae1c323c9:g:tPwAAOSwveheSKOs ). It looks more like some photodetector + readout than anything else. Can't imagine why a supercomputer would be built in this way.

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Offline duckduck

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Re: Goodies on ebay disguised as scrap
« Reply #22 on: April 20, 2020, 05:35:17 pm »
My God! The prices there are insane! US$30 + shipping for a pound of RAM sticks? I can't imagine that you could profit off of that if you were able to magically lift the gold off and then sell it for spot. Never mind the dangerous chemicals and labor involved...
 
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Re: Goodies on ebay disguised as scrap
« Reply #23 on: April 20, 2020, 07:02:37 pm »
10kg of various coax connectors? Sure, why not?
https://www.ebay.com/itm/10Kg-NET-LOT-Gold-Scrap-Recovery-High-Yield-Plated

If they were made in china do not expect any gold to recover.
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Offline TerraHertz

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Re: Goodies on ebay disguised as scrap
« Reply #26 on: February 10, 2021, 02:16:57 am »
Pretty good test points:

https://www.ebay.com/itm/Gold-Plated-Small-Pins-for-Scrap-Gold-Recovery-249-grams/324479481544?hash=item4b8c7bf6c8:g:L~MAAOSwb71gIVGM

Yes. They look like they might be pins from DB connectors maybe?
Which make great mini-patch panel lead pins. A block of panel-mounted female DB-25 connectors, and flying leads with the male pins.
Too bad the lazy bastard seller doesn't have a closeup pic of one with a size scale.

I'd buy that bag of pins, if it was say $15. But US$60? GTFO.
(Seller auto-declined my offer of $15 btw.)

People selling nice electronics parts for gold scrap, whether overpriced or not, should be shot. Barbarians.
Like these guys:

https://www.ebay.com/itm/Gold-Recovery-Vintage-80s-Mil-Spec-computer-pin-Scrap-Refining-lot-100-Gram/184650569454
https://www.ebay.com/itm/Gold-Recovery-Lot-of-25-Vintage-High-Voltage-7-Segment-Driver-297n-Refine-Scrap/184638025827
« Last Edit: February 10, 2021, 02:28:26 am by TerraHertz »
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Offline TerraHertz

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Re: Goodies on ebay disguised as scrap
« Reply #29 on: October 18, 2021, 10:58:20 pm »
That area of ebay always makes me feel sick. Rare old parts and boards, getting crushed for a few cents worth of gold (after a lot of messy, polluting chemical processing, that might not even break even in costs.)

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=gold+recovery
Lots of brass being sold 'as gold' despite probably having very very low gold alloy concentrations.
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Offline daqqTopic starter

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Re: Goodies on ebay disguised as scrap
« Reply #30 on: October 19, 2021, 05:32:01 am »
Quote
That area of ebay always makes me feel sick. Rare old parts and boards, getting crushed for a few cents worth of gold (after a lot of messy, polluting chemical processing, that might not even break even in costs.)
While I understand that sentiment and agree that a lot of people are using a really awful process and are only in it for the 'OMG SHINY!' feeling, there is a legitimate reason to recycle old electronics. Re-use is preferable, but if that's not an option...

Not saying that someone should not try to find a 'new home' for a lot of the stuff, but if you have 5000 pcs of a transistor that went obsolete thirty years ago, no one wants it, what are you supposed to do? Or wholesale quantities of EDO RAMs? Hold on to it till the end of time?
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Re: Goodies on ebay disguised as scrap
« Reply #31 on: October 19, 2021, 08:11:43 am »
Quote
Hold on to it till the end of time?

Of course not. Another curator will be chosen by my executor (so she says).
 

Offline Gyro

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Re: Goodies on ebay disguised as scrap
« Reply #32 on: October 19, 2021, 08:42:17 am »
« Last Edit: October 19, 2021, 08:49:17 am by Gyro »
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Offline TerraHertz

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Re: Goodies on ebay disguised as scrap
« Reply #33 on: October 20, 2021, 12:45:37 am »
Quote
That area of ebay always makes me feel sick. Rare old parts and boards, getting crushed for a few cents worth of gold (after a lot of messy, polluting chemical processing, that might not even break even in costs.)
While I understand that sentiment and agree that a lot of people are using a really awful process and are only in it for the 'OMG SHINY!' feeling, there is a legitimate reason to recycle old electronics. Re-use is preferable, but if that's not an option...

Not saying that someone should not try to find a 'new home' for a lot of the stuff, but if you have 5000 pcs of a transistor that went obsolete thirty years ago, no one wants it, what are you supposed to do? Or wholesale quantities of EDO RAMs? Hold on to it till the end of time?

Of course. Recycling in general and recovery of precious metals is good. I should have been more specific.

What bugs me about the ebay 'scrap recovery' area is the very high degree of irrational expectations. What's needed is a way for people with old junk to easily pass it to expert industrail scale recovery operations. Entities with sensible, non-poluting, economically viable production line processes. Where the price offered for items to be scrapped, would be an actual sane estimate of the value of recovered gold etc, minus processing costs, plus a profit margin.

Instead, in that ebay category it's the norm to see stuff listed for what must be multiples of the actual recoverable gold cost, because the sellers are idiots and have an audience of idiots, all with 'gold fever' - it's shiny, must be worth heaps!  Thus often pricing it out of the range of historical collectors.

Gyro's posted two fine examples of completely irrational pricing.

OK, it's a free market, but a very irrational one, because 'gold recovery' is such a cult of amateurs who have little idea what they are doing. Of course there are some who DO know what they are doing - some interesting youtube channels about gold recovery. Though I never saw one that added up their costs of chemicals, time, etc and worked out an actual operating margin.

In general irrational pricing in a market is no big deal - just a bunch of extortionists and suckers interacting. Except that in this case quite often there are real historical treasures being destroyed. With the sellers having no clue or care. Antistatic handling? What's that?

But hey, it's the same with everything isn't it? Ignorant bozos getting their hands on treasures they don't understand, and destroying them carelessly.


Also... every time I look in that area of ebay, I end up blowing cash. This time... 304188959597 Gold Plated Can and Transistor Legs Scrap Electronics 7.2 Oz  Price US$50!

For some metal can ICs with gold plated legs. Appear to be socket pulls. But I notice they are Burr Brown, and at least some of them seem to be INA-1xx  series. Looking them up, seem interesting.
I got them for $42, which is still way too much for a collection whim.

 Anyone care to make an estimate on how much (little) actual gold is there? Not that I really care.
« Last Edit: October 20, 2021, 01:02:25 am by TerraHertz »
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Online tggzzz

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Re: Goodies on ebay disguised as scrap
« Reply #34 on: October 20, 2021, 09:33:13 am »
Anyone care to make an estimate on how much (little) actual gold is there? Not that I really care.

Plucking some figures out of the air for lead diameter (0.5mm), length (10mm), number of ICs (150), and assuming 3µm gold plating, I'd guesstimate around 3g of gold.

No, I haven't checked my arithmetic :)
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Offline TerraHertz

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Re: Goodies on ebay disguised as scrap
« Reply #35 on: October 20, 2021, 02:13:18 pm »
I'd guesstimate around 3g of gold.

https://www.bullionvault.com/silver-price-chart.do#

Current USD gold spot price: $57,176/kg  or $57.18 / gram.  So maybe $172-ish worth of gold.

That's surprising. I think I'd better check that math. Later...
« Last Edit: October 20, 2021, 02:15:41 pm by TerraHertz »
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Offline daqqTopic starter

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Re: Goodies on ebay disguised as scrap
« Reply #36 on: October 20, 2021, 05:52:15 pm »
I'd guesstimate around 3g of gold.

https://www.bullionvault.com/silver-price-chart.do#

Current USD gold spot price: $57,176/kg  or $57.18 / gram.  So maybe $172-ish worth of gold.

That's surprising. I think I'd better check that math. Later...
Assuming a pin is a single cylinder then:
Circumference @ 0.5mm diameter is: c = pi*0.5 = 1.57mm
Surface area of cylinder excluding top and bottom sides @ 10mm length is: S = 10 * 1.57 = 15.7mm^2
Assuming 8 pins per device, surface are of pins per device will be: St = 15.7 * 8 = 126mm^2
Assuming 150 devices, the total surface are of the pins is: Stt = 150 * 126 = 18900mm^2 = 0.0189m^2
@3um plating that's a total volume of: Vt = 0.0189 * 0.000003 = 0.0000000567m^3
Density of gold is 19,300 kg/m3, so weight of Vt is: mt = 0.0000000567 * 19300 = 0.00109431 kg = 1.09g

This is for the pins alone. The casing also seems to be gilded, could have a more area than pins together on the inside, not sure of construction. Wide bonding was done in gold as well, would assume that to be the case here. Assuming a 100% efficient process and not accounting for time and materials, then you are well in the plus.
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Offline TerraHertz

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Re: Goodies on ebay disguised as scrap
« Reply #37 on: October 21, 2021, 02:11:38 pm »
Today has been a funny day. Maybe I have 2 or 3 grams of effectively unrecoverable gold. Whoopee. (Oh and btw another cost I never see any scrap recovery zealots mentioning, is the cost of purity assay.)

But thanks to ebay as of today I also own several tons of paper. In the form of thousands of equipment manuals. All in CA not Sydney Australia, which means the very expensive fun is just begining. Teaser photos:

(I can't believe they just stacked them right on the concrete. Sheesh.)

Edit to add: Update: https://www.eevblog.com/forum/chat/urgent-request-for-us-west-coast-shipping-contacts/
« Last Edit: October 27, 2021, 11:06:54 am by TerraHertz »
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Offline helius

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Re: Goodies on ebay disguised as scrap
« Reply #38 on: October 21, 2021, 08:09:45 pm »
Would importation of that kind of material even be possible without fumigating it?
 

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Re: Goodies on ebay disguised as scrap
« Reply #39 on: October 21, 2021, 08:59:57 pm »
Wow, looks like a storage locker. Wonder who the heck would have that many manuals and why.
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Online PlainName

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Re: Goodies on ebay disguised as scrap
« Reply #40 on: October 21, 2021, 09:07:12 pm »
Quote
Wonder who the heck would have that many manuals

Let me think... TerraHertz?
 

Offline wkb

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Re: Goodies on ebay disguised as scrap
« Reply #41 on: October 21, 2021, 09:21:13 pm »
Offer them to Google on the condition that they scan them all and make 'm accessible online?

Wilko
 
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Offline daqqTopic starter

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Re: Goodies on ebay disguised as scrap
« Reply #42 on: February 19, 2022, 06:54:25 pm »
Believe it or not, pointy haired people do exist!
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Offline thm_w

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Re: Goodies on ebay disguised as scrap
« Reply #43 on: February 22, 2022, 11:39:28 pm »
Recently suggested videos from this Australian scrap guy:



He gets roasted in the comments occasionally for scrapping tons of valuable ICs. He's tossed pallets full of LGA CPUs.
I don't blame him, he doesn't have the time or knowledge to sort through all of this stuff or test it, most of it is really only worth scrap value.

On the other hand, it might be worthwhile to hire someone with technical knowledge that could sort through, test, and sell off some of the valuable parts or equipment.
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Offline TerraHertz

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Re: Goodies on ebay disguised as scrap
« Reply #44 on: February 25, 2022, 11:24:32 am »
For the microwave diode connoisseur: https://www.ebay.com/itm/284658931801?hash=item4246fe9859:g:FaAAAOSwLehiD3wZ

Well shit.



That's the first time I ever saw Bidnapper fail to register a snipe bid. Would have won easily I think.
Hopefully someone here got those. Quite an assortment of types. Perhaps they are all dead... but most likely not.

That seller thought they were 'contacts.'  Good grief. This is exactly the kind of ignorant scrapping I hate.



Update: I'd guessed it was something like eBay chosing to pull that "are you human? Please click on all the images of boats" rubbish just then.
Digging into why my bid failed, the reason is even more stupid. Extract from the eBay automated bid response: "Failure eBay Trust & Safety Error Filter Id: In certain categories, including the Bullion category, selling internationally isn't allowed. ... "
I had my delivery address set to my reshipper in LA. But eBay has a bug... sometimes it gets confused about delivery address and you have to reset your current address in the listing when buying, before it 'remembers' your currently set address. Just one more reason to hate eBay.
No, TWO reasons. Their considering this item 'bullion'... bah. And why would that be a problem anyway?
« Last Edit: February 25, 2022, 06:34:09 pm by TerraHertz »
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Offline helius

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Re: Goodies on ebay disguised as scrap
« Reply #45 on: February 26, 2022, 11:19:45 pm »
No, TWO reasons. Their considering this item 'bullion'... bah. And why would that be a problem anyway?
The category the seller chose to list under is "Coins and paper money > Bullion > Gold > Scrap and recovered gold". So that is why. As to why that category would be restricted, I'm sure you already know.
 

Online tszaboo

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Re: Goodies on ebay disguised as scrap
« Reply #46 on: February 27, 2022, 11:02:25 pm »
I'm slightly confused by this PCB gold recovery business. I've ordered edge connectors with gold plating, and calculated that the gold was worth something like 10 cents for a dozen PCB. So how is this even worthwhile to ship somewhere by post. Someone is asking 20 USD for a kg of PCB, that has to be a scam, or bad valuation, right?
 

Offline daqqTopic starter

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Re: Goodies on ebay disguised as scrap
« Reply #47 on: February 28, 2022, 05:59:00 am »
Quote
Someone is asking 20 USD for a kg of PCB, that has to be a scam, or bad valuation, right?
There are various plating thicknesses - the older the better. You can have some really thick plating on the older high end stuff. For instance you have almost a gram of gold on a Pentium Pro. Also, there's bonding wires on ICs made from gold, not only PCB fingers, connector plating... For the new stuff the yield is very small IIRC though.
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Offline daqqTopic starter

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Re: Goodies on ebay disguised as scrap
« Reply #48 on: March 01, 2022, 06:31:59 pm »
Not gold, but a whole lot of seemingly new parts such as trimpots:

https://www.ebay.com/itm/115272971967?hash=item1ad6cdf6bf:g:wjMAAOSw6RFiHV2j
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Offline PaulAm

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Re: Goodies on ebay disguised as scrap
« Reply #49 on: March 01, 2022, 06:56:41 pm »
It didn't sell at $0.99 so it got relisted for $280.00  :-DD
 
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Offline thm_w

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Re: Goodies on ebay disguised as scrap
« Reply #50 on: March 02, 2022, 01:45:43 am »
Looks like its back to 99c.
If they are genuine Bourns trimpots, probably worth it to someone, but I can't make out the value. 105?
Through hole GSPs in there as well.
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Offline free_electron

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Re: Goodies on ebay disguised as scrap
« Reply #51 on: March 02, 2022, 03:25:03 am »
i wonder who buys that 'for gold' stuff. there is no way you can recover that much gold from the scrap ...
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Offline MathWizard

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Re: Goodies on ebay disguised as scrap
« Reply #52 on: March 02, 2022, 09:46:25 am »
Non-working GPUs, sell on ebay, for just about the price of the working unit. And currently, the average GPU sells for around maybe +2x it's paper value.

Broken GPU's are basically not worth fixing at this point, why bother to save 100$, for something thats probably already 2-3 yrs old
« Last Edit: March 03, 2022, 06:30:33 pm by MathWizard »
 

Online wraper

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Re: Goodies on ebay disguised as scrap
« Reply #53 on: March 02, 2022, 09:54:26 am »
i wonder who buys that 'for gold' stuff. there is no way you can recover that much gold from the scrap ...
Idiots who watched gold recovery videos on YouTube too much. Even if they can recover that gold to cover the cost of the scrap, chemicals which are requires will eat up any possible profit and lot of time is needed to be spent.
« Last Edit: March 02, 2022, 01:02:44 pm by wraper »
 
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Offline wkb

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Re: Goodies on ebay disguised as scrap
« Reply #54 on: March 02, 2022, 10:46:21 am »
Let alone correctly disposing of waste chemicals..   :palm:

Wilko
 
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Online tooki

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Re: Goodies on ebay disguised as scrap
« Reply #55 on: March 02, 2022, 03:40:39 pm »
i wonder who buys that 'for gold' stuff. there is no way you can recover that much gold from the scrap ...
Idiots who watched gold recovery videos on YouTube too much. Even if they can recover that gold to cover the cost of the scrap, chemicals which are requires will eat up any possible profit and lot of time is needed to be spent.

Let alone correctly disposing of waste chemicals..   :palm:

All of what you guys said is exactly what I’ve asked myself. There’s just no way it makes sense!!
 

Offline MathWizard

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Re: Goodies on ebay disguised as scrap
« Reply #56 on: March 03, 2022, 06:27:56 pm »
Broken GPU's sell for about 80-90% of the price of working GPU's. There must be next to no profit these days, in trying to buy broken GPU's, and fix them and sell them. The market is that screwed up. Between scalpers, miners, the supply chain shutdowns, the duopoly of Nvidia and AMD, and some big retailers, they have made GPU's largely unavailable, and unaffordable, to the average poor working person, let alone kids/teens that might want to save up for a GPU.

Wow I thought about this yesterday ?
« Last Edit: March 03, 2022, 06:31:44 pm by MathWizard »
 

Offline daqqTopic starter

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Offline thm_w

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Re: Goodies on ebay disguised as scrap
« Reply #58 on: October 14, 2022, 09:11:07 pm »
Tektronix ASICs (the interesting kind for the new high end oscilloscopes), a chunky FPGA:

 https://www.ebay.com/itm/115556000019?mkevt=1&mkpid=0&emsid=e11001.m43.l2648&mkcid=7&ch=osgood&euid=549dab5b85ef4ef68d35c2bc89960095&bu=43889533236&osub=-1%7E1&crd=20221013182138&segname=11001

Wonder what this means: "These are rejects from the assembly line."
Were they desoldered or just not picked up by the pick and place? odd.

Who is buying this crap, worthless PCBs: https://www.ebay.com/itm/384790513173
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Offline Ranayna

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Re: Goodies on ebay disguised as scrap
« Reply #59 on: October 14, 2022, 10:14:27 pm »
 :-DD
Should we tell the guys that buy these PCBs for "gold" that you can get 25 100x100mm ENIG PCBs at JLCPCB for less?
 

Online tooki

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Re: Goodies on ebay disguised as scrap
« Reply #60 on: October 14, 2022, 10:54:10 pm »
There’s one doofus scammer on there selling 100g of assorted MLCC capacitors — ostensibly full of silver, palladium, etc. — for $100 plus shipping.

Equally sad, at least 4 people actually paid for that crap.

You can buy a 100g bar of silver bullion for $95 right now…
« Last Edit: October 14, 2022, 10:57:30 pm by tooki »
 

Online PlainName

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Re: Goodies on ebay disguised as scrap
« Reply #61 on: October 14, 2022, 11:56:28 pm »
He has 100% feedback, too.
 

Offline thm_w

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Re: Goodies on ebay disguised as scrap
« Reply #62 on: October 17, 2022, 09:00:19 pm »
:-DD
Should we tell the guys that buy these PCBs for "gold" that you can get 25 100x100mm ENIG PCBs at JLCPCB for less?

If I had zero morals: make some "antique" looking PCB layouts, and just dropship to buyers.

Now you make me think though, how much gold is would be on a 100% plated JLC board:
Quote
ENIG plating thickness of each layer should be between 0.05 to 0.23 µm for the immersion gold layer and 2.5 to 5.0 µm for the electroless nickel.

So 100x100mm x 2 of 0.05um thickness is what 0.000000001m2? 0.5mm3
That should be 10mg of gold if true (50c worth), more than I was expecting. JLC charges ~60-80c per board.
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Offline daqqTopic starter

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Re: Goodies on ebay disguised as scrap
« Reply #63 on: June 12, 2023, 06:28:23 am »
A bunch of what look like Teradyne tester boards, chock full of special relays: https://www.ebay.com/itm/155603446399
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Offline dmills

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Re: Goodies on ebay disguised as scrap
« Reply #64 on: June 12, 2023, 09:07:19 am »
Well I think I might have a way to make e-waste into a profit centre!
Got a whole pile of BER boards from various things, who would have thought you can shift that junk on ebay and get paid for it?

Hell, play it right and you might be able to make money drop shipping random connectors and tat to these folks from a convenient disty.

I wonder how many boxes of junk that market can absorb?
 




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