Could you clarify whether the issue is 1. Only Plating Burn 2. Copper Particles Causing Shorts or 3. Both What are the trace widths? How often is this seen? I will do my best to assist. Please send e-mail address if you want to discuss off the forum. ################################################################ TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################