Christoph Lechner wrote: > So you simply mix a HCl/H2O2 etchant the usual way. When you begin to > use the etchant, it's bluish.
No. Yellow-green for full etching strength. After some time (and some PCBs) it becomes > green. Dark green, and when loaded with copper, black. So when it's green it's CuCl etchant, isn't it??? Pretty much. John G -- Ecosensory Austin TX _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
