Homebrew PCBs

lcdpublishing wrote:
> Hi guys,
>
> Last night I was thinking about 3 and 4 layer PCBS and can't seem to 
> figure out how they do them.
>
> Single sided - easy, we all do that.
> Double sided - easy, we do that as well with some alignment issues.
>
> But once you get beyond that, I realize a different manufacturing 
> process has to be done to get the layers.  How do they do it?
>
>
>   
Wouldn't they just start with a double layer and then do the extra 
layers as single sided, then glue them on after they has finished etching?

Cheers,

Bryan