Leon Heller wrote:
> I've just etched a small board (ARM JTAG interface) using the new tank
> and it looks very nice. The instructions suggest two minutes to warm
> the solution after switching the heater on; I used about five minutes,
> and at least 20 minutes is probably about right. Because of the low
> temperature etching took about 15 minutes.
>
> I used my usual photo-etch technique with artwork produced on an HP
> DeskJet 5940 inkjet printer using Premium JetStar film. The text on
> this board had the default 5 mils line width, and came out perfectly.
> Narrowest track size was 12 mils, though.
>
> Here is a photo of the PCB:
>
> http://www.leonheller.com/pcb.jpg
>
>
That looks ∗really∗ good! What process do you use for the photo-etch
technique? I searched the web and found that UV is the conventional way
to develop the resist but was looking through my Jameco catalog
yesterday and they offer a positive photo-etch package from Datak that
is supposed to only need a 100-watt incandescent to develop the
resist.. Has anyone used this product before and if so, what were your
results?
Cheers,
Bryan