Dear Technetters ; Could I get any information for PCB manufacturing process for catalyzed FR- 4? I received some problem in through hole after plating that much holes were not well plated and so very rough surfaces with cracks in walls. Does it come from poor catalyed process or Palladium defects? Thanks for your kind opinion. Tal Young Kim Manager, Quality Assurance Team Doosan Corporation Electro-Materials BG Tel : 82-445-820-8451 Fax : 82-445-820-8300 E-mail:[log in to unmask] ############################################################## 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. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################