Etching 5N gold botton

Gold Refining Forum

Help Support Gold Refining Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

samuel-a

Well-known member
Joined
Oct 7, 2009
Messages
2,190
Work of art...
 

Attachments

  • IMG_20180911_191904.jpg
    IMG_20180911_191904.jpg
    4.8 MB · Views: 141
  • IMG_20180911_191900.jpg
    IMG_20180911_191900.jpg
    4.4 MB · Views: 141
I used to get in a steady stream of 5 nines gold from sputtering targets. That was back in the day when .9995 was the go to purity so I didn't bother refining it I just etched off any surface impurities with aqua regia and melted it. No sense lowering the purity! It always made beautiful bars.
 
Back
Top