How do you engrave a circuit on a copper clad plate?
Simple circuit, usually on the copper clad corrosion protection layer, and then according to the line pattern scraping the corresponding anti-corrosion layer, and then use ferric chloride solution etching.
High precision circuit principle is the same, but with its anti-corrosion layer, you can use light to remove. So it's called photolithography. This process can be made by machine. So the accuracy is high.
Ink used for preventing corrosion in copper clad laminate on the circuit, then acid etching, not to cover the ink will rust away. After cleaning the circuit on the circuit board out, this is the process of a single panel. Some multilayer board and I don't know how to do it,
