Welding or soldering jewelry allows you to attach two parts metal jewelry together with heat and usually solder. There are many types of weld joints and different types of metals can be soldered together in many cases. A soldering torch is an essential jewelry tool for any jeweler who repairs jewelry or makes jewelry. Torches, combined with solder allow jewelry makers to attach a stone setting to a jewelry design or ring, as well as allow you to size a ring. If you are working on jewelry that has gemstones that are vulnerable to heat, remember to protect them by removing the stones or use some other type of heat protection to prevent them from being damaged during the repair.