Homebrew PCBs

DJ Delorie wrote:

> 
> 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.


Just guessing but did you check either light intensity distribution (are
you using the leds setup) but most important (what at least Adam
Seychell calls) etch break point. He uses one non printed copper clad
board in the etch and sees if are copper areas etched sooner then
others. That means bad agitation. See his last comments about etch tank
setup.

Else just over expose it a bit...