Hi Adrian,
I think grease/oil on the board is the worst problem. I just use
scotch brite and scrub in both directions which creates a cross hatch
pattern on the copper for the toner to adhere to. I clean the board
with 98+% IPA and let the board air dry or use compressed air.
The other key is to make sure all toner is melted. I think that's
easier to do with the transparency method.
Regards,
Dennis
--- In Homebrew_PCBs@yahoogroups.com, "adicont2" <adicont2@...> wrote:
>
> A perfect board preparation is crucial for good results. I have same
> problem in the past and I blame my iron too. Now I spent at least 10
> minutes to board preparation (Scoch&Brite + Ajax + hard work).
> My iron seting is in 200C range. This temperature is ok for my tipe
of
> tonner.
>
>
>
> Adrian
>