Anyone who has ever wound a toroidal coil by hand can tell you that it’s not exactly a fun job. Even with the kinds of coils used in chokes and transformers for ham radio, which generally have ...

Sometimes, you find yourself in need of a coil. You could sit around winding thousands of turns of copper wire yourself, but that would be remarkably tedious. Thus, instead, you might follow the ...

Andrew Marchington’s wire winder was runner-up in the intermediate category of Farmers Weekly’s annual Inventions Competition. Farmworker Andrew Marchington, of Copplestone in Devon, decided to build ...