There’s the main rotary axis, and a wire-guide that moves along it ensuring ... and to see a fun time-lapse of an 814-turn Tesla coil winding!

Even with the kinds of coils used in chokes and transformers ... ring out of plywood with a slit in it. Carrying the wire spool, the winding ring rotates on a C-shaped fixture that brackets ...

they also serve winding coil applications for devices like toroidal transformers, which rely on cylindered cores consisting of copper wire wrappings. The growth in construction market, automotive ...