“Ever since I read Terry Pratchett and Stephen Baxter’s The Long Earth, I wanted to build a stepper box. It took me a while to figure out the details. As it turns out, Willis Linsay’s original stepper diagram (source) is less of a straightforward build than people want you to believe. In this Instructable, I’ll lay out the details of how you can build your own stepper. Once you reach the Earth of your choosing and decide to settle, you can still use it as a cool night light. That is, after you built the infrastructure for an electric power grid etc. Hey, no one ever said it would be easy!”