Have you considered whether or not you could improve your multilayer yields by better use of your base materials? Perhaps the following could give you a few ideas of how this could help you.
One thing that is long overdue in our industry is a series of guidebooks focused on helping companies with all their needs, from qualifications like AS9100 and Mil-P-31032 to various technologies, heavy copper, rigid-flex and microvias. I-Connect007 is now providing our industry with an entire series of these guidebooks, starting with the first book, "The Printed Circuits Buyers Guide to… AS9100 Certification." Authored by Imagineering Inc., this book educates readers about the AS9100 quality standard, and explains how to earn this certification.