- Be patient! In all aspects, designing a PCB takes patience.
- Take your time doing the toner transfer with the iron. Firm, even pressure, and at least 5 minutes under the iron.
- When soaking the board after ironing, be patient and let the warm water disintegrate the paper, or else you risk tearing the toner off of the board.
- When etching, don't rush -- etching a 6x6 board took me over half an hour, and as evidenced by the shorted pads, I could have probably let it etch for another few minutes.
The next board I build I'll try to follow all of these rules. And of course I'll keep you posted!