In my experience the current IPC test used by laminators to check dimensional stability has no correlation to dimensional stability results after multilayer lamination at a PCB shop. Is IPC investigating a different test method or does any PCB shop have there own "dimensional check" for incoming laminate. I'm working on this issue at our facility and I'd like to swap ideas with other PCB shops. Thanks in advance for any response. Paul Formiller Process Engineer - Merix Loveland [log in to unmask] phone (970)-203-6663 pager (970)-593-5562 fax (970)-203-6751