Machinist Task Matrix and Weightings

MWA A – Performs common occupational skills 9%

1. Task A-1 Performs safety-related tasks 16%

• 1.01 Maintains safe work environment
• 1.02 Uses personal protective equipment (PPE) and safety equipment

2. Task A-2 Organizes work 25%

• 2.01 Interprets documentation
• 2.02 Plans sequence of operations

3. Task A-3 Uses communication and mentoring techniques 14%

• 3.01 Uses communication techniques
• 3.02 Uses mentoring techniques

4. Task A-4 Processes workpiece material 27%

• 4.01 Selects workpiece material
• 4.02 Uses hoisting, lifting and rigging equipment
• 4.03 Marks workpiece for identification
• 4.04 Performs heat treatment
• 4.05 Performs quality control of workpiece
• 4.06 Deburrs workpiece
• 4.07 Sketches parts

5. Task A-5 Maintains machines, and inspection equipment tooling 18%

• 5.01 Cleans machines
• 5.02 Lubricates machines
• 5.03 Sharpens tooling
• 5.04 Applies cutting fluid and coolant
• 5.05 Troubleshoots equipment
• 5.06 Maintains machine alignment
• 5.07 Maintains inspection equipment

MWA B – Performs benchwork 8%

6. Task B-6 Performs hand processes 69%

• 6.01 Performs layout
• 6.02 Saws workpiece
• 6.03 Files workpiece
• 6.04 Performs hole making operations
• 6.05 Performs threading operations
• 6.06 Installs thread inserts
• 6.07 Broaches workpiece
• 6.08 Performs pressing operations
• 6.09 Forms workpiece
• 6.10 Finishes workpiece

7. Task B-7 Refurbishes components 31%

• 7.01 Disassembles components
• 7.02 Analyzes components
• 7.03 Assembles components

MWA C – Machines using power saws 6%

8. Task C-8 Sets up power saws 63%

• 8.01 Selects power saw types
• 8.02 Selects saw blades
• 8.03 Installs saw blades
• 8.04 Selects power saw speeds and feeds
• 8.05 Makes power saw adjustments
• 8.06 Sets up workpiece on power saw

9. Task C-9 Operates power saws 37%

• 9.01 Saws straight and angle cuts
• 9.02 Cuts irregular shapes

MWA D – Machines using drill presses 56%

10. Task D-10 Sets up drill presses 56%

• 10.01 Selects drill press types
• 10.02 Plans operation of drill presses  
• 10.03 Selects drill press speeds and feeds
• 10.04 Sets up jigs, fixtures and work holding devices for drill presses
• 10.05 Sets up tooling for drill presses

11. Task D-11 Operates drill presses 44%

• 11.01 Drills holes using a drill press
• 11.02 Cuts countersinks, counterbores, chamfers and spot faces using a drill press
• 11.03 Performs tapping using a drill press
• 11.04 Finishes holes using a drill press

MWA E – Machines using conventional lathes 21%

12. Task E-12 Sets up conventional lathes 50%

• 12.01 Selects conventional lathe types
• 12.02 Plans operation of conventional lathes
• 12.03 Sets up work holding devices for conventional lathes
• 12.04 Sets up tooling for conventional lathes
• 12.05 Sets up conventional lathe accessories
• 12.06 Sets up workpiece on conventional lathe
• 12.07 Selects conventional lathe speeds and feeds

13. Task E-13 Operates conventional lathes 50%

• 13.01 Faces surfaces using a conventional lathe
• 13.02 Turns external surfaces using a conventional lathe
• 13.03 Drills using a conventional lathe
• 13.04 Bores holes using a conventional lathe
• 13.05 Reams holes using a conventional lathe
• 13.06 Turns tapers using a conventional lathe
• 13.07 Knurls using a conventional lathe
• 13.08 Cuts grooves using a conventional lathe
• 13.09 Cuts threads using a conventional lathe
• 13.10 Parts off workpiece using a conventional lathe

MWA F – Machines using conventional milling machines 21%

14. Task F-14 Sets up conventional milling machines 53%

• 14.01 Selects conventional milling machine types
• 14.02 Plans operation of milling machines
• 14.03 Sets up work holding devices for conventional milling machines
• 14.04 Sets up tooling for conventional milling machines
• 14.05 Sets up milling accessories
• 14.06 Sets up workpiece on a conventional milling machine
• 14.07 Selects conventional milling machine speeds and feeds

15. Task F-15 Operates conventional milling machines 47%

• 15.01 Mills surfaces using a conventional milling machine
• 15.02 Mills profiles and pockets using a conventional milling machine
• 15.03 Mills slots, grooves and keyways using a conventional milling machine
• 15.04 Cuts gears and splines using a conventional milling machine
• 15.05 Drills holes using a conventional milling machine
• 15.06 Reams holes using a conventional milling machine
• 15.07 Cuts countersinks, counterbores, chamfers and spot faces using a conventional milling machine
• 15.08 Performs tapping using a conventional milling machine
• 15.09 Bores holes using a conventional milling machine

MWA G – Machines using precision grinding machines 8%

16. Task G-16 Sets up precision grinding machines 59%

• 16.01 Selects precision grinding machine types
• 16.02 Plans operation of grinding machines
• 16.03 Sets up work holding devices for precision grinding machines
• 16.04 Mounts grinding wheel
• 16.05 Sets up grinding accessories
• 16.06 Sets up workpiece on precision grinding machines
• 16.07 Selects precision grinding machine speeds and feeds

17. Task G-17 Operates precision grinding machines 41%

• 17.01 Grinds flat surfaces using a surface grinder
• 17.02 Grinds profiles
• 17.03 Grinds internal and external cylindrical and tapered surfaces
• 17.04 Grinds tools and cutters
• 17.05 Finishes holes using a honing machine

MWA H – Machines using computer numerical control (CNC) machines 20%

18. Task H-18 Performs CNC programming 43%

• 18.01 Creates process documentation
• 18.02 Creates manual input program
• 18.03 Transfers program to and from control memory
• 18.04 Optimizes program
• 18.05 Creates 2D and 3D models
• 18.06 Programs using computer-aided manufacturing (CAM)

19. Task H-19 Sets up CNC machines 31%

• 19.01 Selects tooling and tool holders for CNC machines
• 19.02 Sets up tooling and tool holders on CNC machines
• 19.03 Sets up workpieces on CNC machines
• 19.04 Establishes work datum
• 19.05 Verifies program

20. Task H-20 Operates CNC machines 26%

• 20.01 Adjusts offsets
• 20.02 Monitors machining processes
• 20.03 Interrupts program cycle
• 20.04 Restarts program cycle