Andrew I am no expert in terms of blind vias but I know Dr.W.Schmidt, the owner of DYCONEX. This company is the inventer of DYCostrait. He is a very helpful person and might well help you. Just send him a fax: Dr. Walter Schmidt DYCONEX AG Schaffhauserstr. 580 8052 Zuerich Switzerland Fax.: xx41 1 306 36 40 Phone: xx41 1 306 24 44 Best regards Guenter Grossmann Federal Institute of Technology Chair for Reliability Zuerich Switzerland *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************