Mylar fingers

[patnor1011]

I would call them mylar fingers unless there is better name for them. They usually come from like cd/dvd rom but can be found in other places and on white ribbon cables too. I am wondering if anyone have some data on possible yield. I vaguely recall that many years ago someone had some assayed and from what I remember they ran about ounce from a kilogram but I may be mistaken. Is there anyone who can shed more light on this?

 

[Martijn]

I never processed these separate, but the light weight substrate material is much lighter than Ram fingers, so it will be around or above average ram finger yield, I would expect.

 

[niks neims]

I tried to process them once, can't recall all the details, but if I recall correctly, results were underwhelming... I was left under impression that they were ENIG...

 

[rickbb]

I throw them in with regular plated parts.

 

[eaglekeeper]

I've done a couple handfuls in the past, about the only thing I can remember was they were annoying to rinse. They were like 2 pieces of wet glass when stuck together and they sometimes stuck to the beaker walls....not terrible, just annoying.

I still trim them off and throw in with any gold fingers I have. But i've never had enough to get a yeild from.

 

[Shark]

Several years back I ran a couple of pounds but have no idea where any notes are after moving. I don’t recall being over impressed but kept adding them in with other fingers and plated boards. I did learn that they are similar to fingers in that some are better than others. The one from ink jet cartridges were the worst.

 

[the leprechaun]

They may also contain palladium.

 

[the leprechaun]

Hi Pat,
Sorry did not realise it was yourself who was asking if you still have my number give me a call

 

[Marcel]

Hi Pat,
good to ear from you.
These stripes are usually flash-plated. Ultra-super thin coating.
Did some a few years ago and it was close to nothing.
You can test the coating with a simple method. Try to rub the gold-plated areas with a finger or another object like a pen and if you can rub it off, then you have only a few atoms of coating.