How can I protect the through holes copper which is electroplated from being etched away by the ferric chloride? Is there a resistive solution or it`s just the conductive ink.
Electronic – PCB electroplating then etching
diyetchingpcbpcb-fabricationthrough-hole
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Best Answer
The same photoresist that keep the copper from being etched away should generally keep the hole plating from being etched away. If not, they can be painted explicitly.