Homebrew PCBs

Stefan,

Yes, acetone was etching into the fiberglass. Paint thinner? I'll try 
it and it probably doesn't smell as bad. I hate acetone!

The tracks are .015 ie 0.0281 which like you suspected: 0.4mm

Do you know how I feel now, looking at that board? It would cost 
probably couple hundred bucks to have it done in an hour. I used to 
pay much more. The method is just incredible! Oh, how to get that 
pressure much more repatable and predictable?!!!!! 

Mike

--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan 
<stefan_trethan@g...> wrote:
> 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