Dear Technetters: Does anyone has experience to get 7 mil/7mil line width/gap out of 3 OZ copper foil by inner layer etching (CuCl2, HCL, H2O2)? Is there any concerns about undercut or peel strength? How about the etch factor for CuCl2 etching? Can we get 3? Thanks and best regards Shirley __________________________________________________ Do You Yahoo!? Yahoo! Photos - 35mm Quality Prints, Now Get 15 Free! http://photos.yahoo.com/ ############################################################## 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 ##############################################################