Hello, I would appreciate input on making cross sections for measuring nailheading. (I don't mean to start a debate here on whether nailheading is critical.) I have oberved cross sections from a couple of labs where they are able to section after drill, rather than wait until the holes are plated. We find it difficult to fill the small via holes with molding compound, and therefore the sections are not adequate. We need to fill the holes with compound. What are some of your methods to achieve this? We do use a vacuum. Also, is it true that the best nailheading data is generated prior to plating the hole? How much of the nailhead goes away during the plating processes? Sincerely, Drilbert ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## 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. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################