[Travellingwave]

Thanks Andy , I measured the diameter of the wire with a digital micrometer and got 0.25 mm. So if I order new 0.25mm wire is that the outside diameter including the insulation or the diameter of the copper core?

I measured the thickness of the laminated core at each end of the coil and one end has expanded by 2 mm due to corrosion which can’t have helped matters.