Homebrew PCBs

your question makes me think of this:
if you used a coated board (similar to the photo type) and use the printer to
print the 'developer' (or solvent) on, could that be an alternative?
something as
-clean the board
-apply the miracle coat (spray-brush-spin...)
-dry
-print the miracle ink
-wash (develop)
-fix - burn (or whatever)
-etch

is this absolutely crazy??? perhaps even a non epson printer would do.
and if a method like this worked for the solder mask? or the legend? they don't
need as high a resolution...



--- mihai_hagianu <mihai_hagianu@...> wrote:

> 
> Hi guys,
> 
> i have tryed to use a water resistent photo emulsion made for
> serigraphy, as etch resist in ferric cloride etchant, and it seems it
> was a very bad investment.
>  I have seen in the archive that there are some emulsions that do work
> as etch resist, and also adhere to the metal.
>  Can someone please tell me which emulsion works ?
> 
> i have user ulano 995wr (diazo sensitizer and Polyvinil-Acetate base)
> and this one doen not work....it bubbles off in the etchant.(i guess e
> very small amount of etchant is penetrating through, and makes the
> emulsion loose contact to the metal)
> 
> thanks for any information on this,
> Mihai


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