> > > I wonder if the Cupric Chloride etchant has the same problem. > It's been eight years since I etched boards, and when I did I held them vertically with a bubbler for agitation, but I did not notice this problem at the time. -Denny --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .