Forrest Christian wrote: > You definately do *not* want dry Ferric Chloride to mix it yourself.... > did I mention that already? Didn't they always tell you in chemistry class: "add the acid"? (yes, I know FeCl is a salt but it's exothermic) There's no trouble if you start with cool water and add your FeCl crystals slowly. - Martin -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist