Homebrew PCBs

>Markus Zingg wrote:
>> 
>> Yes, the main advantage is that it's easier to handle. No need to
>> isolate. I.e. if say at some spot there is no glue in the inner layer,
>> it would not necesairly be catastrophic. It really boils down of
>> applying glue to both inner layer sides, tap the outer ones on it and
>> press it together as good as you manage.
>> 
>> The inner "double sided" material is 0.5mm sized and the outer ones
>> 0.3mm together with the glue you end up with something about the
>> thikness of a standard PCB.
>> 
>
>I was just going to say you can try making a 4 layer PCB using 
>two 0.8mm double sided panels and laying a piece of glass cloth 
>between the them. But now I've starting writing this email I 
>realized the added difficulty in having to etch the inner layers 
>separate from the outer layers. Your "three ply" technique (0.3mm 
>+ 0.5mm + 0.3mm) still looks like the best way.
>
>Did you have trouble finding a supplier for single sided 0.3mm 
>and double sided 0.5mm board material ?  I assume these are of 
>18um copper foil.
>
>Adam

You probably guessed it already - I have the material from Bungard. 

Markus