Remember yesterday, when one illustrious modder whipped up a head-mounted computer that featured a printed circuit board of his own design? The fabrication method he used was called direct-to-PCB Inkjet printing. An economical (if laborious) alternative to professional production, the process includes: designing your circuit, printing it out on a transparency, flickin’ on some lightbulbs, washing things out in abrasive chemicals, and waving a magic wand. While it’s not for the timid (nor simple enough to go through in great detail here) the kids over at Instructables have been kind enough to put together and post one of their award-winning step-by-step guides on this very subject. So, what are you waiting for? Hit the read link and get to work.