Homebrew PCBs

At 08:13 PM 4/25/2008 +1000, you wrote:
>
>I was looking at an easier and more reliable way to etch PCBs. I know 
>from experience that bubble etching never produces acceptable uniformity 
>and often needs manual brushing to finish it off.

I would have thought that more randomness, not less, would be desireable
since the areas to be etched are (to some extent) randomly oriented.  No?

(At this point I wanted to make an analogy to sand dunes, glacial scoring,
or orbital sanders versus belt sanders, but my caffeine level isn't up to it).