>
> Even with several hours etching time I do not see any bad
> under-etching, or pitting. I have mostly double sided stock but prefer
> single sided designs, so the back side hogs easily two thirds of the
> etching time while the artwork side is already done much sooner. If
> I'd see problems with underetching I'd do something about that, but so
> far there are none. I use mostly 10mil/0.25mm minimum trace width.
>
>
> ST
>
Heh I have the opposite problem. I have mostly single sided stock but it's more and more often that I'd like to do a double sided board! Vetco has 20"x24" 1/16" single sided board for $12/sheet but I haven't found a good price on big pieces of double sided.