14KY Plumb Gold Paste Solder 14KY plumb gold paste solder supplied in a syringe of 1 DWT. This solder has a flow point of 1275 degrees Fahrenheit (691degrees Celsius) and a melting point of 1185 degrees Fahrenheit (640 degrees Celsius). This Krohn syringe solder comes pre-mixed with flux. The syringe makes it ideal for fine jewellery repairs such as fine chains.