samuel-a
Well-known member
- Joined
- Oct 7, 2009
- Messages
- 2,190
Make sure you don't toss them with the rest of your low grade stuff, those are heavy plated little jewels...
I found mine in an old Decade boxes, a few dozen of them...
According to the maker, this specific type are 3 um plated gold, that's sound resnoble knowing what their tasks are...
I had this little piece (in pic 3 on the left) soaking in nitric, and was left with intact gold foils with the same original shape, this is a good indicator for thickness... plus, a tiny bit of silver came out of there...
The other pins are still soaking in AP.
Have a good urban mining
I found mine in an old Decade boxes, a few dozen of them...
According to the maker, this specific type are 3 um plated gold, that's sound resnoble knowing what their tasks are...
I had this little piece (in pic 3 on the left) soaking in nitric, and was left with intact gold foils with the same original shape, this is a good indicator for thickness... plus, a tiny bit of silver came out of there...
The other pins are still soaking in AP.
Have a good urban mining