Turns setscrews to adjust tension on wire and sets counter for number of turns specified. Starts machine and manually feeds wire over coil core or spreader to obtain even and uniform winding and shape of coil. Observes counter and stops machine at specified number of coils. Wraps insulation between layers and around wound coil or inserts plastic blocks between turns to form cooling ducts. Cuts wire to form leads, using wire or bolt cutters.
Pounds coil with hammer or mallet to shape end windings or remove coil from fixtures.
Winds asbestos, cotton, glass mica, paper, or tape around coil, and brushes varnish on coil or dips coil in varnish, epoxy, or wax to reinforce and seal coil. Strips insulation from end of lead wires, threads lead wires through insulating sleeves or slides sleeves over leads, and solders lead wires to terminals. May test coils for winding continuity, using test lamp.