In a message dated 98-06-25 10:18:12 EDT, you write: << > 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: A number of vendors to the PCB industry make strippers that stripped full cured LPI, they do not do it fast, and there can be, but is not always, some attack on the buttercoat. We have seen that inexpensive laminate is more suceptible (sp?) to attack than the costlier stuff (What a surprise!). If you want more info on one of the better ones available, contact me directly please. Rudy Sedlak RD Chemical Company Mountain View CA phone: 650-962-8004 fax 650-962-0370 ################################################################ 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 ################################################################