Richard Gisenia wrote: > I have been informed of a plating issue being called > "dog boneing". What is it, and what is the cause? "dog bone " isa term used to describe the shape of a finished plated through-hole. it actually looks like a dog's bone. the cause of this condition may vary from high-aspect ratio boards (but have also seen it) when the actual geophysical setup of the tank is out of optimum operating parameter. copper ion transfer through the hole tends to plate up faster atop of the knee than through the actual barrel. thus the shape of a dog-bone occurs. when this scenario appears one should actually set-up mapping of the cell and run a few DOE's, in order to evalute the cells functionality - mechanical - electrical - and chemical. reagards Richard Fudalewski Florida Cirtech ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################