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I bought this cleaner several years ago at Costco so do not know if they still have that brand. It contains Phosphoric acid. I add it to the solution when cleaning range brass.

I mixed up some...

Found this link For a different etchant that is locally avialable with no shipping. Cheap and good PCB etching solution..... - Electronic Circuits Projects Diagrams Free

Max how did you remove the copper from the G10 board? I tried pealing it but this grade of board is to good and I do not have any ferric chloride on hand. I guess I can do the cutting and basic...