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I think they mean the uneven surface after plating, you can just see it against the gold. I suspect this is the underlying copper being uneven and the gold plating just makes it more obvious. Nothing to worry about.
Brian.
Photo resolution is too low to see details. Would prefer a microscope photo with diffuse lighting.
To me, the pad surface looks partly like silver metallic rather than white. What's the gold process? If it's nickel-gold, could it be that the final gold layer is damaged?
Not at all, I fear.I think it's clear enough to see the white residue.
I have to agree.Not at all, I fear.
Hi,
I have to agree.
I see a bright - almost white part at the hole --- I think this just is the reflection of the light.
Klaus
Not at all, I fear.