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Creating things with metal and repairing metal tools and other objects require the strength and power of welding. Welding uses heat on metal to the point of melting to create a bond between individual pieces. Choosing the right welder depends on the job and your level of experience. Understanding the types of welding and what each one does is important, especially for the beginner. Unfortunately, there is no one type of weld that works for every job, so knowing the basic can help you pick the machine that's right for you. Shielded metal arc welding (SMAW) is the manual process of stick welding. Stick welders rely on an electric current to create an arc between the stick and the metal. SMAW is used for constructing steel structures and to weld iron and steel. Gas metal arc welders or MIG welders use a shielding gas and wire electrode to create the weld. These two components heat up the metals to be joined. It requires a direct-current source of power with a constant voltage. MIG welding is the most common type of industrial weld and uses globular transfer, short-circuiting transfer, spray transfer and pulsed spray. Flux cored arc welders (FCAW) are alternatives to shield welding and use a semi-automatic arc weld. This method is popular for construction projects because of its speed and portability. Gas tungsten arc gas welders (GTAW/TIG) are used to weld thick stainless steel or non-ferrous metals. It is a type of arc weld and uses tungsten electrodes to create the weld. No matter what type of welder you choose, taking welding classes or getting instruction from a seasoned welder is the best way to help you learn the craft and prevent injury.