PCB etching question?
I wanted to start making PCBs. However, I read that because the chemicals dissolve the copper, you can't dump it down the sink or throw it away because it is "hazardous" and should be taken to hazardous waste disposal. I'm still in high school and can't really do that and/or my parents would think I'm doing something dangerous. Is there any other way to etch PCBs besides using chemicals, like a knife or something?