Homebrew PCBs

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
>