Homebrew PCBs

On Mon, 18 Oct 2004 18:41:57 -0400, Earl T. Hackett, Jr.  
<hacketet@...> wrote:

>
> The green coating is a solder mask.  It comes in a variety of flavors  
> silkscreen applied epoxy, photo imaged epoxy (CIBA IIRC), and photo  
> imaged acrylic (DuPont Vacrel).  Stay away from the Vacrel if you're  
> going to wave solder it - it solder balls like no tomorrow.  I have no  
> idea how you would apply these materials without professional production  
> equipment.

there is some photo-imaged laminate-on film i gathered. could be bungard,  
not sure.
By the way, green 's out, red 's in now.

ST