Instructables user [birdycrazy] built a winding rig from a PVC pipe and a bunch of K’Nex. He had recently started a Tesla coil project and needed an efficient way to wind the secondary coil.

Anyone who has ever wound a toroidal coil by hand can tell you that it ... That obviously requires a winding ring that can be opened up to allow the toroid form to be inserted; [Sandeep] chose ...

Discover the seamless process of coil winding for ceiling fans, where skilled workers wind copper wire with precision to create the essential coils that power the fan’s motor. This critical step ...