per this, if you have a tool shop, or a metals shop, building transformers is super easy. it takes electrical steel, which we have plenty of for ev. paper. epoxy. laquor coated copper wire single strand. multi-strand high amp wire, a welding gun, and the pateince to wrap, steel, paper, copper, one after another, on a turn wheel, or by hand if needed.   6wj7h30c
United States