Homebrew PCBs

What i wanted to ask before the huge picture file diverted me:

You wrote you used aceton for rubbing off the toner.
In the blackened areas, did the acetone solve the epoxy and mix it with 
toner?
or what else?
that looks not good and it would be a reason not to use acetone for 
rubbing.
I use laquer thinner and had no such effects.

I assume you use a cnc for drilling?
if not guidance holes in the pads are good for centering the drill.

But the board looks very well, big pads, very nice...
One can see the places where the with is not constant, i had this too, 
before i used much less pressure.

Which track with is this? ~0,4mm?

you can easily go down with it once you have the toner transfer working 
nicely.
this gives you much easier routing....

Stefan