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Re:How to make PCBs at home in 1 hour without special materi... by ph0rque on Monday March 30, 2009 @09:49AM (#538495)
Supposedly, you can substitute ferric chloride with hydrogen peroxide and muriatic acid: http://www.instructables.com/id/Stop-using-Ferric-Chloride-e...
Re:How to make PCBs at home in 1 hour without special materi... by kragen on Monday March 30, 2009 @06:55PM (#539293)
When I read your comment, I thought, “Holy shit, he wants to use H₂O₂ because FeCl₃ is dangerous? Talk about ‘out of the frying pan, into the fire!’” but the Instructable you linked to just uses the standard 3% H₂O₂ USP solution, which isn't particularly dangerous.