Soldering jewelry with copper-phosphorus solder solid

My page Blog - This is a video where I took the whole process of using solid solder. Copper-phosphorus solder very hard. Use very large wire cutters to chop solder into small pieces. If you get a big piece of 3-4 mm it can be cut in half. It is important to choose the best size for each solder joint. Place the solder near the seam. Because of the phosphorus content in the solder, we can work without flux. Use a butane torch to heat the copper. The solder is melted by hot metal and will flow into the place with the highest temperature. This way you can control it. If too much solder can distribute it on the surface of a metal with a flame. After heating the copper became dark - use citric acid to clean it up.