Tom Hybiske asked about "the inclusion or exclusion of nonfunctional lands
from internal planes or signal layers."

In a Flex circuit design, 12 layers, .120 thick, 18x22 pannel, one board vendor
had to remove all "non-functionals" from the internal layers to get the 
design to laminate.  a 2nd vendor quoted the job with all non-functionals
removed.  This design "worked" when it had 10 layers! (pads-only, 2 planes,
1oz cu).   


Bill Gaines
AeroJet (for $) 1100 Hollyvale, Azusa, Calif. 91702-0298
IEPS    (for info) [log in to unmask]
IHPVA   (for speed & fun) P.O. Box 51255, IN, IN 46251-0255
SCCA    (for trophys) Solo II (818-988-RACE)

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818-812-2199