During economic downturns they may be laid off or work fewer hours. Preparation Courses in blueprint reading, shop math, and mechanical drawing are useful. Other recommended courses include physics, chemistry, and metallurgy. Formal training is available at high schools, vocational schools, community colleges, and welding schools. Training is also available from the Armed Forces.
Some employers provide training to help welders improve their skills.
In order to be certified, welders demonstrate their welding abilities for an inspector. Usually they weld a test specimen to specific codes and standards. The testing procedures are usually based on the standards and codes of the industry that employs the worker. For more information about requirements in your state, contact your state Board of Licensing. Optional certification is also available from the American Welding Society.