March 2015
I’m interested in photo etching copper-clad PCBs. Most guides don't say what to do with the chemicals when I'm done. Do I just pour them down the drain or will it hurt the environment (or my pipes?).
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If you etch copper off a copper-clad PCB, you sure don't want to port etchant into copper pipes! And you don't want the copper ions from the etched board going into the waste-water system. After all, we all live downstream of someone else. MG Chemicals offers two disposal ideas, which you can read here. www.mgchemicals.com/tech-support/ferric_faq/.
