pixelcanvas wrote:
> Adam, by pressure pack of solderable PCB you mean a spray can of
> solder mask?
Its not solder mask because the PCB lacquer can easily be soldered
through. Solder mask is a type of heat resistant 2 part cured epoxy.
> As for the slivers, I'm sure it's the little cracks on the ink.
> I just took a couple pictures and with the camera macro the cracks
> look a lot worse than I thought.... =/
> I think is a mix of the wrong film and too much ink on the printer
> settings. I think a laser printer should work better.
>
> http://s155.photobucket.com/albums/s282/sawasdee_che/Electronics/?action=view¤t=PCB_Mask.jpg
>
> http://s155.photobucket.com/albums/s282/sawasdee_che/Electronics/?action=view¤t=PCB_1.jpg
>
That inkjet printout is horrible. The transparency/ink combination
you're using is not working. Pigment inks would most likely cause
cracking. Before changing transparencies, try a dye ink instead. Many
inkjet printers have pigment black ink for text, and dye ink for photo
printing modes. Photo mode black printing is either a dedicated photo
black ink or from combined 3 colour inks. In general, I found dye black
inks are superior than pigment ink for creating PCB photomasks.