Bob Paddock wrote: For example, say you have an 8-layer board, and you have > blind vias from layers 1-4, and 5-8, and buried vias from 3-6, you are > not able to do that since the blind and buried involve the same > layers.
Wow, that means super dense is possible with a fab that is close tolerance... blind vias 1-3, buried 4-5, blind vias 6-8, then maybe add two more layers dedicated to gnd plane pwr plane for a total of ten layers for ultra dense high speed boards like cell phones. John _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user