Homebrew PCBs

Trevor White wrote:

> 
> I have been looking into making 4 layer boards.  Has anyone any 
> experience/thoughts/comments on bonding boards together?
> 

It depends, are you using true prepreg laminates or common fr4?

In this list some people accomplished it or at least in a homebrew way.
My first thoughts go to Markus Zingg who used common fr4 glued with 5min
epoxy pressed with vises with PTH
http://tech.groups.yahoo.com/group/Homebrew_PCBs/message/3266

And Dj Deloire who uses innerlayers for gnd and vcc and uses a bit of
solder in bigger holes where gnd or vcc is needed in the 2 layer
circuit. Using thin fr4 bonded with thin double sided tape
http://tech.groups.yahoo.com/group/Homebrew_PCBs/message/19442