Arc welding uses an electrical arc to create strong joints on metal workpieces. MIG (metal inert gas) welding uses consumable electrode wire. It is typically faster than TIG (tungsten inert gas) welding and produces cleaner welds than stick welding. Stick welding does not require compressed gas and can be used in windy outdoor areas. It has fewer parts and is more portable than MIG and TIG welding. TIG welding creates clean, precise welds on a wide range of materials. It is ideal for welding thin materials and surfaces that will be visible, such as bike frames. Engine-driven welders have a combustion engine that drives an electrical generator to provide power for stick, TIG, and MIG welding applications. They can also be used to power tools and other jobsite equipment. Multiprocess welders can serve as a power source for more than one type of welding application.