Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> Divide your winding length by 1,400 to determine wire size. Then wind. Use 200 degree C wire. Dr. Resonance Resonance Research Corporation E11870 Shadylane Rd. Baraboo WI 53913 > > So i should wind 240 mm pipe with 1400 turns of 0.77 mm wire???? Im sory but > i want to start!! > >