Tesla coils are awesome. But if you’ve ever built ... 3D printed motor coupler on the wire-guide axis, to help mitigate quick acceleration! The main rotary axis is also driven by a 3D printed ...

Take for instance this Tesla coil that [JJ] sent us. He got the idea to build a coil for his Halloween display about a week before the event, but he figured it would be easy enough to do since he ...