A professional who fabricates, assembles, and tests experimental solid fuel rocket motor parts and assemblies according to specifications, using handtools, precision instruments, machines, and test equipment. Responsibilities include:

• Reads and interprets blueprints, drawings, and engineering information to determine methods and sequence of operations to fabricate experimental units.
• Sets up and operates machines, such as milling machines, lathes, drill presses, and power saws, to machine parts.
• Measures parts for conformance to specifications, using calipers and micrometers.
• Assembles parts into completed units, such as valves and pressure vessels, using handtools.
• Operates vacuum pressure testing equipment to test assembled units for air leaks.
• Confers with engineering, supervisory, and manufacturing personnel to exchange technical information.
• May mix chemicals used in fabrication of composite materials.
• May operate winding machine to fabricate composite parts for solid fuel rocket motor.
• May specialize in fabricating, assembling, and testing experimental liquid fuel rocket engines and be designated liquid rocket-engine mechanic.