Homebrew PCBs

At 5:20 pm ((PST)) Mon Nov 27, 2006, Lez wrote:
>On 27/11/06, john80014 <jhewatt@...> wrote:
> > http://www.cbridge.com/howtos/printedcircuitboard.shtml
> >
> >  StencilPro.  I have thought of using this for pcb, silkscreen and
> >  solder mask.
>
>Anyone used this, I'm puzzled as to how it works, I can see that its
>light sensitive, but how does that make it allow the etch resist to
>pass through???
>
>I think I'm missing understanding part of the process.

The part you are missing is development in water. This is
steps 7 & 8 in the illustrated stencil production process at
http://www.cbridge.com/howtos/createstencil.shtml


Regards, LenW