As soon as I saw this, I thought, “why didn’t I think of that!?” Thingiverse user Brian Beebe designed an Electro Wire Stripper, a wire stripper that indicates when you’ve cut through the insulation. As soon as each blade comes into contact with the wire, it closes the circuit to turn on the LED, letting you know you’re ready to strip. The design files are available for download and 3D printing, you supply the plastic and components. How well does it work? According to Brian, it’s one of the best wire strippers he’s ever used.