Hi KennyB, Why do you care? What difference does it make on a PCB, and even more so on flex? Why inspect for irrelevant comformance? The drilled hole diameter for PCBs has significance in terms of how small I can make the internal connecting lands, without causing breakout under acceptable tolerances. It has significance, because it is more difficult to plate good Cu into smaller diameter holes; it has significance because the reliability and survivability in the soldering process depends on the drilled hole diameter. Werner Future workshops: Pb-Free Soldering Processes—Survival, Quality, Reliability, July 17/18, Thal, Switzerland Pb-Free Soldering Processes—Survival, Quality, Reliability, July 21/22, Bad Segeberg, Germany Pb-Free Soldering Processes—Survival, Quality, Reliability, August 18, Orlando Reliability Issues with Lead-Free Soldering Processes, September 22, Schaumburg Failure Mode and Root Cause Analyses Reliability (Fatigue, Brittle Fracture, ENIG), September 22, Schaumburg Solder Joint Reliability: Parts 1 & 4, Oct. 9, Moscow, Russia Solder Joint Reliability: Parts 1 & 4, Oct. 17, Timisoara, Rumania Solder Joint Reliability: Parts 1 & 4, Oct. 22, Tallinn, Estonia ************** Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007) --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------