> DIY PTH is difficult, let alone multilayer boards. Blind and buried vias
> only make sense with six layers or more - completely out of the question
at
> home.
The reason I would suggest 4 layer blind and buried vias is to avoid having
to drill 0.005" holes or smaller at home and then try to DIY PTH. I wonder
how the board houses get decent through hole activation when the holes get
that small. I would imagine the drills have a lot to do with it.
I've been following the Markus' posts for a while. It appears he is really
getting a process down for PTH on 2 layer.
What frustrates me is the time it takes to get a 4 layer proto. If I can run
them at home, even if it takes 30 hours, I'm still way ahead of the
commercial houses who take a minimum of 5 days plus another day for
shipping.
Thanks
Ron