Romix - 19-5-2021 at 19:59
I've left beaker full of BGA ICs in vinegar for a year to remove the solder.
Solder dissolved, some copper too. There's a white precipitate in a tin acetate solution what it can be? Also I having a problem dropping metals out
of the solution, tried baking soda, nothing drops, displacing with pure aluminum and zinc, nothing too.
Romix - 19-5-2021 at 20:12
The solution still is very acidic. Will neutralize it with Tin slag left from melting very oxidized lead free reels.
Probably will take another year or so.