Welding

• Welding can be completed by people using welding equipment or by specially designed robotic welding equipment. Welding can be completed using a variety of methods, including spot and arc welding techniques.
  
  

Spot

• Spot welding uses two copper electrodes, through which the material to be welded is squeezed to react with the electrical current passed through the electrodes. Spot welding is often used with steel metal as it does not require the use of a filler metal to complete the weld.
  
  

Arc

• Arc welding is an umbrella term used for a number of techniques, including tungsten inert gas (TIG) welding. Arc welding uses an electrode to create an electric arc used to melt a base metal to attach it to another piece of melted metal of similar chemical composition.