leon Heller wrote:
>
>
> I don't have any problems. The resist just dissolves in about 30 seconds,
> with a bit of agitation of the container. I use precoated positive resist
> boards.
Ok then, it is probably a characteristic of dry film negative resist. Of
the 3 different brands of negative dry film I have used, all form a
lightly adhering 'mushy' coating that needs more than just light
agitation to be removed. Once the PCB goes in the acid etch, any
photoresist residues immediately become solid again, leading to shorts
between traces. Its really frustrating when that happens.
Adam.