--- In Homebrew_PCBs@yahoogroups.com, Richard Mustakos <rmustakos@a...> wrote: > Dave, > Where have you been? Don't you know that we use copper plated zinc > pennies? They are actually steel. Try a magnet on one. 8-) Leon
Message
Re: Copper Pennies, was First PCB.... neutralizing the HCL
2004-05-19 by leon_heller