This Instructable from Jared Foster doesn’t just show you how to make his cool persistence-of-vision business card. It takes you through the construction of a circulating etch tank, the modification of a laminating machine to make a stencil applicator, the assembly of a controller to turn a toaster into a reflow oven, and the cobbling-together of a vacuum pickup tool for SMT components. And then you get some practice using all that cool stuff making a POV business card. It even comes with obligatory American Psycho allusions.