ibexlatham
New member
- Joined
- Dec 20, 2019
- Messages
- 4
How would you process these boards?
I tried the Acid and Peroxide method and failed miserably. After reading the board I realize the grey sludge I was getting that plugged my filters was an issue with the solution, but I have some other issues to get past too.
First off, these boards are about 9x7 inches, they are populated with lots of tiny chips and larger components. There’s plenty of tiny gold “rings” and dots (about 1mm-2mm in diameter) and some gold fingers. Wherever there is a component there is gold plating under the solder. I have about 100 of them for free and regularly get more in to test from work. We just throw them in the scrap bin and pay the scrap guy to take them.
When I initially tried it I took 3 boards and cut them up into small 2x2 inch pieces and put them in the AP solution and let it sit. When I tried to filter it, the filter immediately plugged (because of the grey sludge and small chips). After trying to rinse and filter it outside in 30 degree temps for an hour I got sick of it and slowly dumped in baking soda to neutralize it all and dumped it into a bucket.
So my question - how would you process these?
Each of those gold “rings” has a pin from a connector or component going through it.
When I process it in the AP soliton all the small chips fall off and make it harder to filter.
Would I be better off gently torching them to depopulate them first and I’m left with just the boards, solder, and gold plating on them?
Should I cut them up first, or just get a large container and put them in there whole?
I tried the Acid and Peroxide method and failed miserably. After reading the board I realize the grey sludge I was getting that plugged my filters was an issue with the solution, but I have some other issues to get past too.
First off, these boards are about 9x7 inches, they are populated with lots of tiny chips and larger components. There’s plenty of tiny gold “rings” and dots (about 1mm-2mm in diameter) and some gold fingers. Wherever there is a component there is gold plating under the solder. I have about 100 of them for free and regularly get more in to test from work. We just throw them in the scrap bin and pay the scrap guy to take them.
When I initially tried it I took 3 boards and cut them up into small 2x2 inch pieces and put them in the AP solution and let it sit. When I tried to filter it, the filter immediately plugged (because of the grey sludge and small chips). After trying to rinse and filter it outside in 30 degree temps for an hour I got sick of it and slowly dumped in baking soda to neutralize it all and dumped it into a bucket.
So my question - how would you process these?
Each of those gold “rings” has a pin from a connector or component going through it.
When I process it in the AP soliton all the small chips fall off and make it harder to filter.
Would I be better off gently torching them to depopulate them first and I’m left with just the boards, solder, and gold plating on them?
Should I cut them up first, or just get a large container and put them in there whole?