![]() This is made from lengths of oxyacetylene welding wire which is copper coated. ![]() The magnetic effects are magnified by the core material of the coils. The positioning is made so as to create an adjustable gap of about 1/4 inch (6 mm) between the coils and the rotor magnets in order to find the optimum position for magnetic interaction. There could just as easily have been six coils. The three coils produced in this way were then attached to the main surface of the device. To help the winding to remain completely even, a piece of paper is placed over each layer of the winding: The coils are wound with the end plates attached and drilled ready to screw to their 1/4 inch (6 mm) PVC bases, which are the bolted to the 3/4 inch (18 mm) MDF supporting structure.
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