Product Description: Best solder for copper wire. It does not contain silver, so when soldered, it has a copper color. It will not spoil the appearance of your jewelry. Made in Felder, Germany. Copper phosphorus solder with a melting point of 760°C and 18 ga is hard but thin, so it is comfortable to use. Even small cutters can cut small pieces without applying force. Each type of he can be purchased 12 inches (1 foot), 24 inches (2 feet), or 36 inches (feet). Packaged as a bundle of several pieces 10sts long for convenient shipping. Choosing the best size for each solder joint is important. Place the solder near the seam. The solder contains phosphorus, so you can work without flux. Use a butane torch to heat the copper. Solder is melted by hot metal and flows to the hottest places. This way you can control it. Too much solder can be dispersed on the metal surface by the flame. After heating, the copper turned black. Use citric acid to clean. It’s a solid solder that’s easy to store, doesn’t degrade over time, and isn’t toxic. But it’s better to solder under the hood.Free video tutorial on how to use this solder
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