Originally Posted by gustavus
I have a 1/4" steel sheet with an angle iron welded on as a backstop to hold the motherboard in place while shearing of the IC's with my air chisel. You will find that more than just flatpacks have gold bonding wires inside.
Had a truck load of telcomm boards, that I had removed the IC's after incinerating ball milled everything into powder then stored into 20 liter pails, during our move once again placed and forgotten about.
About this time last year once again found the pails, tipped the contents onto a plastic drop cloth then using a magnet from a trailer axle equipped with electric brakes and my large battery charger removed all the magnetic scrap then put everything away to work on my catalytic leaching project.
Came across these two pails once again last week, anyhow a large pick up truck load of boards will net you about 80 lbs of ash. I tried panning the values from the ash this evening but discovered that ball milling ground everything much to fine to pan out.
So the project goes back on hold, getting the shop organized takes priority.
Pictures of the shearing station and my home built ball mill.
Nice set up...
I use a ball mill as well, does a great job on some times of material.
I use a classification screen used in panning/prospecting to sift the gold wires. Works fairly well.
Scott
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