A professional who repairs broken or cracked castings and forgings, using special cold process requiring no welding. Respnsibilities include:

• Calculates factors, such as size, depth, and position of fracture, and tensile strength and distribution of stress and strain in material.
• Employs combination of holding and locking devices to make repair, using airhammers, air drills, air grinders, punches, and strippers to insert holding and locking devices in casting and to smooth finish.
• May fabricate special angle heads for airhammer, air grinder, and air drill, using blacksmith tools and anvil.