... transformersWelding ProcessLiquid phase temperature(Melting moint):about 227oCLine diameter:0.6mm,0.8mm,1.0mm,1.2mm ... making exact choices for your application2.Select the diameter of the solder wire, from between 0.01 inch ... will melt. But if you choose too small of a diameter, you will not get enough solder on ... need flux, which can be applied from a tube, with a brush, from the core of the solder or ...