We are manufacturing immersion nickel gold boards for an automotive sensor OEM using aluminum wire bonding and snap cure silver epoxy adhesive. We have tried to develop surface roughness standards to predict surfaces that will not allow excessive bleed. Does anyone have similar trouble that can exchange experiences? Dave Gardiner Circuit~Tech Inc. 275 Steelcase Rd. E. Markham, Ontario L3R1G3 905-474-9227 ext. 233 ############################################################## 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 ##############################################################