We use a product called "PACOVIA" from the Paper Corporation of America, I believe. This is a plastic sheet which seals the top of the panel when resin is flowing from the bottom side. It works well but does leave some residue on the epoxy surface. Contact me directly if you wish to discuss it more. Respectfully, Rick Haynes [log in to unmask] ------------------ Original text From: "Stone, Steve" <[log in to unmask]>, on 10/1/97 12:15 PM: Greetings All, I'm looking for a more effective and cost efficient method of blocking resin squeeze up hole barrels on sequentially laminated multilayer PCB's. Any and all suggestions are greatly appreciated. Steve Stone Process Engineer Altron, Inc. 978-933-1735 [log in to unmask] ############################################################## 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 ##############################################################