Use the special flux consisting of vaseline – 100g, chloride zinc in a powder - 7g is applied, glycerin – 5g. Prepare the flux in a porcelain mortar. At first place in a mortar vaseline, and then add to it a powder of chloride zinc and glycerin, well mixing all it to get of homogeneous mass.
Surface of the soldering ends carefully smooth out with emery paper. Degrease - wipe the cotton wool moistened in 10% spirit solution of dichloride copper. Grease the ends with the flux. Well tin and only after that solder them together. The Most suitable solder is “POS-
