Yes, inside the cup the gold must be removed, otherwise the gold in the cup will dissolve in the solder joint and the solder joint will become more brittle. How to remove the gold is shown in the J-STD-001 training.
Yes, inside the cup the gold must be removed, otherwise the gold in the cup will dissolve in the solder joint and the solder joint will become more brittle. How to remove the gold is shown in the J-STD-001 training.