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Abstract: Flux is a necessity in the lead-free soldering process. Inactivated flux residues can cause electrical shortages ... Three different types of printed circuit board (PCB) surface finishes ...

Now for a first attempt, it would have been enough to come up with some cool PCB art and stick a few LEDs ... and I had no problem soldering these previously through-hole components as if they ...

The key element here is that copper and solder mask placements have extremely ... [Brian Benchoff] published a fabulous How to do PCB art in Eagle article. Of course, he’s gone deeper than ...