>The populated glass epoxy boards are hand soldered. A soldering iron can measle just about any multilayer pwb. For epoxy with two pth close together it usually takes about 6 seconds, depending on the board construction. You might suggest minimizing the heat and especially time. Tom Waznis Hallmark Circuits Inc. ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################