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