Homebrew PCBs

"cunningfellow" <andrewm1973@...> writes:
> A 60 second exposure with a UV tube will give harder edges to the
> resist than a 10 minute exposure with a lower intensity source.

Would this affect etch-under at all?  My latest board had trace
thinning to the point where many were missing completely, I've been
"bloating" my films to compensate but a better process would be a
better solution.