Interesting commentary on pulse electroplating waveforms for optimal via plating on PTH PCBs. Shows you why you're glad you are a software writer or hardware designer or ... anything but a PTH plating control algorithm caster (unless you happen to be one). http://www.circuitree.com/CDA/ArticleInformation/features/BNP__Features__Ite m/0,2133,23426,00.html Horrible stuff :-) -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics