Any thoughts on these green boards?

[Geo]

ill chime in. the gold thats shown is all contact gold and not RF shielding. shielding is what is on telecom material. i would assume the plating on those boards would be the same thickness as gold plated fingers.

 

[cking]

ill chime in. the gold thats shown is all contact gold and not RF shielding. shielding is what is on telecom material. i would assume the plating on those boards would be the same thickness as gold plated fingers.

Geo,
What do you consider RF shielding? What's the difference between contact and "shielding"? Would the goal be to prevent outside RF interference from an internal component? Does that take more or less plating then?
Thanks,
Chris

 

[Geo]

RF shielding is to keep outside radio waves from reaching sensitive electronics. its used in telecom and cellphone technology quite extensively. the shielding will be very thin. thats what throws people when they buy telecom boards and the yield is very low considering the weight of the boards and the area of coverage. contact points on the other hand is a plated area that is either in contact with another component continuously or is repeatedly contacted by another component (such as the area where two boards touch or finger connectors). the fact that the contact pad is being,well, contacted on a regular basis means the gold has to be thicker to withstand the wear of repeated contacts.

RF gold shielding is so thin, if it were removed in a sheet, you could read a newspaper through it.

 

[joem]

As a test I put 1/2 a pound of these on ebay and got $35 buck for 4 boards. I think that is great since I got them for free. I also have 4 second chance offers on the go with one accepted as I write this.
Works for me.

 

[EDI Refining]

As a test I put 1/2 a pound of these on ebay and got $35 buck for 4 boards. I think that is great since I got them for free. I also have 4 second chance offers on the go with one accepted as I write this.
Works for me.

Wow $70/lb - Can you send me your ebay link ?

 

[joem]

As a test I put 1/2 a pound of these on ebay and got $35 buck for 4 boards. I think that is great since I got them for free. I also have 4 second chance offers on the go with one accepted as I write this.
Works for me.

Wow $70/lb - Can you send me your ebay link ?

Not sure how to show you items sold.
My user name is Get2disney2012 if you want to search or maybe another menber can see it and paste it here?

 

[jimdoc]

http://www.ebay.com/itm/Heavy-Plated-Computer-Printed-Boards-SCRAP-GOLD-recovery-easy-to-process-/200802954160?pt=LH_DefaultDomain_2&hash=item2ec0c9ebb0

 

[joem]

Thanks jim

 

[glondor]

I still want to run a pound of those. Cmon, send some!

 

[joem]

So final results of the ebay test auction on 1/2 pound of the 2x2 disc boards (4).
I sold ( including second chances) $121.85 for a total weight of two and one half pounds of boards. $48.74 a pound. In conversation with these buyers they were a mix of gold recovery, collectors, as well as a clock maker.
We are going to see what gold recovery Glondor can do with a pound of these boards next.

 

[lazersteve]

I'll go out on a limb and predict the yields will be very low. The reason for my assesment is that the plating appears very similar to some memory cards I bought several years back that had never been populated and were still on the original card blank ( all hooked together). Secondly, a good portion of the weight is not plated at all as the circles are all connected with blank board.

Yields will be way less than finger boards by the pound of starting material with all of the circles attached to the card.

Steve

 

[trashmaster]

Hay Joe.

Did you make a deal for the rest of those boards????
How many????
What price ??????

 

[joem]

Hay Joe.

Did you make a deal for the rest of those boards????
How many????
What price ??????

No deals are done yet. I have my samples and am working on the larger load but the owner has not contacted us yet.

 

[takenbyvultures]

I'm processing similar boards right now, I'll post pics and info probably tomorrow or monday.

 

[joem]

I'm processing similar boards right now, I'll post pics and info probably tomorrow or monday.

Any numbers yet?

I have been selling these on ebay for a (quick) average of $20 for 1/2 a pound ( 3 boards). I also put a single disc ( of a different type) in the envelope just as a bonus. Glondor I'm packing up a pound of each for you this weekend to see how much gold can be recovered.
edit: mailed a pound of each type of discs to Glondor to test return results.

Well gondor has them . we will see what the yield is.

 

[glondor]

Lazersteve was correct.

 

[joem]

Lazersteve was correct.

Yes Steve is correct oh well gold is gold and better when it's free gold