With both sides in play, that seems likely, but a
12"x12" board is going
to be pricy (at least there won't be many through-holes, just vias; those
things add up).
Exactly. I think a six layer board would be needed, but maybe with some
extremely optimized routing, maybe a four layer. Either way, I doubt there
would be a whole bunch of unused real estate left (or money in your
pocket).
William Donzelli
aw288(a)osfn.org