Although a post that begins with “over the past six months I have set up fairly complete printed circuit board fabrication lab in my apartment, cheaply and safely” can be somewhat disconcerting, I believe that a man with the chops to make a PCB fab in is apartment is a man worthy of knowing. Luckily, that man, one Jared Foster, has made these fancy persistence-of-vision business cards to share his info with you. The process includes full instructions for creating an etching tank, oven, and any number of electronical doodads.

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DIY Electronic Business Cards: You Know, For Nerds