How to make nice looking ones of your own designs.
Any process that involves making your own board will have a number of steps in common. At a high level, here’s what you’re doing:
Procure a bare board (coated with a thin layer of copper on either one or both sides). Most methods will use a plain board; photolithography requires one coated with special light-sensitive chemicals.
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If you have a plain board, scrape off any burrs along the board edge (you want a flat copper surface; I use a fine file for this), and clean it well to remove oxidation and finger oils. I start with fine steel wool, follow up with denatured alcohol to remove any oils or grease, and finish by buffing with a very clean towel. From this point on, you’ll want to handle your board only by the edges to avoid getting finger oils on it.
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