Hi everyone,
I'm just getting started making PCBs. Actually, I've been trying for some time, but have only recently been able to get good results using the toner transfer method.
Currently I am following the instructions in this guide to make etchant from Hydrochloric Acid and Hydrogen Peroxide and I have been using this solution for my boards:
http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/
I have also considered using Ferric Chloride, as it is available from my local Radioshack (although it is a little expensive).
What is the best way to dispose of these etchants? Or perhaps I should ask, what is the cheapest way to safely dispose of these etchants ;-) I'm pretty sure there is a hazardous waste disposal center near me, but that it costs money to take stuff there. Is there any way I can dispose of this stuff at home?
Thanks a lot for your help!