Gold-filled wire can be soldered with yellow silver solder or with karat gold solder. Gold-filled wire consists of layers of 12Kt gold over a brass base. The color should be similar enough that the solder won't show. However, the key is to use just the right amount of solder so there is very little clean up. It is important to understand that the gold is removed if the wire is overworked with solder and heat. A light touch with finishing techniques, such as filing, sanding and polishing should be used on gold-filled wire.
Always follow safety precautions when soldering metals with heat (open flame), including good ventilation.
- Sandra Lupo, Jewelry Designer and Instructor and Swarovski crystal Ambassador