Homebrew PCBs

>If you just used a normal isolation milling
>CAM file (like you would with a mechanical
>router) then you might end up with an
>island of copper in the middle of the board
>with no ground connection.
>
>The EDN wont spark on that any more :(
>  
>


  Makes sense and easy enough and probably not even that bad with an 
intelligent skip of uncut areas..  I'd still rather see it draw the 
traces with electricity, shouldn't be too hard to figure out some type 
of useable sort and just more fun to watch.