Soldering guns and irons are tools for melting and applying solder wire to join metal objects and surfaces. Soldering guns have a handle with a trigger for activating heat. They're typically used on components such as cable lugs and heavy-gauge wire. They generally operate at higher heats and heat up and cool down faster than soldering irons. Soldering irons have a wand shape and are lighter than guns, making them easier to handle. Small soldering irons are commonly used for circuit board and electronics soldering where excessive heat could damage surrounding materials. Large soldering irons have a high heat output for heavy-duty soldering jobs in industrial settings.