Hello, If the solder mask in the vias has been cured (full plug), is there any way to remove it without damaging the boards ? There's no solder mask on the surface beside in the vias. Thanks. Richard Blanchet Process Engineer, screening Viasystems Canada Inc. tel.: (514) 694-8900, ext. 4189 fax: (514) 694-9776 [log in to unmask] ################################################################ 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 technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################