Winding Toroids

I never wound toroid inductors before. For a very small dollar amount they could be purchased pre-wound with the TR-25 kit. However, I felt I would be more a part of the build if I wound them myself. #28 magnet wire is very thin. Winding was not so bad, but taking the enamel coating off the wire and tinning them was no picnic. The worse was to untwist the two wire for the transformer. The twist caused difficulty in taking the coating off and tinning. Also, once a wire is tined if becomes brittle.