Originally published at: https://www.protoexpress.com/blog/wet-pcb-etching-acidic-alkaline-methods/
Copper etching is one of the important processes in PCB manufacturing. We can simply say that wet PCB etching is a process of controlled corrosion. In normal conditions, corrosion damages metals but with an effective machined process, corrosion can be controlled and this process is called etching. Let’s get into the details of the wet etching process.