Will Form 8655 Electronically 2024

Hi everybody, in this video, I will demonstrate how to recover the gold plating from connector edges, aka fingers. The fingers are found in most scrap computers and servers. Warning: The process shown in this video involves highly corrosive acids and should only be done outside or in a fumehood using safety gear such as gloves, goggles, and a respirator. It is mandatory. Let's begin. The fingers are placed in a plastic strainer. Here we have some hydrochloric acid, a little bit of copper chloride solution, and a small DC-powered air bubbler. The plastic tube goes under the strainer with the fingers right at the center. Now, the fingers are covered by the acid, copper solution, and some water to make sure all the fingers are covered by the solution. Turn on the bubbler, and that's it for the next week or so. Here we are, 24 hours later. The solution color turned olive green and doesn't seem like much has happened. Let's kill the air and see what's going on. You nice, we can clearly see some gold foils floating around. It seems to be working well. The cover plate is placed back on, and the air tube is connected. Here we are again, 48 hours into the process. The solution color is now very dark green, and here we can clearly see that some of the fingers have been completely depleted. Day 6, it seems like the majority of the gold plating is now loose. Let's keep it in the solution one more day just to make sure. Now, you might ask yourself, what exactly is going on in this process? On every common printed circuit board, there are basically three layers of metal plating: copper, nickel, and gold. The point is to slowly etch away the copper and nickel to free the gold...