At the end of the day, PCB etching is all about removing copper from a board in as controlled a fashion as possible. PCB etching methods generally fall into one of two broad categories ...

Making a PCB is very simple ... one goal is to keep the circuit single sided so you can etch using single sided copper clad. This will allow you to gain some experience before moving on to ...

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This particular innovation, where a PCB is packed with stepped circular or rectangular copper coins, is headed to markets where even the best air coolers are impractical – like miniature devices ...