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Make an origami circuit board

Create electrical traces by just folding a paperlike material ...
Making a circuit board from scratch sounds simple until you try it. Designing clean traces and avoiding short circuits takes careful attention. The etching process reveals the copper pathways that ...
If you only have 15 minutes to sweat, it's easy to skip out on a workout. I mean, how much can you really accomplish in 15 minutes, right? Umm, a lot, actually—if you spend them wisely. That's the ...