Which of the following is a drawback of CNC machines?

Which of the following is a drawback of CNC machines?

• A. No Maintenance Required
• B. Low Initial Cost
• C. Requires Extensive Operator Training
• D. Incompatible with Flexible Manufacturing

Answer: (C)

The main idea being tested is how the training needs of CNC operation create a practical drawback. CNC machines rely on programming and precise setup, so operators must be proficient with G-code or CAM workflows, understand coordinates, tool offsets, feeds and speeds, and be able to troubleshoot errors or tool wear. This level of skill is essential for safe, accurate, and efficient production, but it also means onboarding and ongoing staffing require substantial training. That training burden can slow start-up, raise labor costs, and affect productivity if the team isn’t properly skilled. This is why the statement about requiring extensive operator training is the best answer. It captures a real, ongoing limitation that isn’t present in the same way with simpler or manual setups. In contrast, the idea that no maintenance is required is inaccurate, since CNC machines need regular upkeep. A low initial cost is also unlikely for CNC work—the upfront investment is typically higher. And CNC technology enhances, rather than hinders, flexible manufacturing because programs can be changed to produce different parts with relatively quick setup.

The main idea being tested is how the training needs of CNC operation create a practical drawback. CNC machines rely on programming and precise setup, so operators must be proficient with G-code or CAM workflows, understand coordinates, tool offsets, feeds and speeds, and be able to troubleshoot errors or tool wear. This level of skill is essential for safe, accurate, and efficient production, but it also means onboarding and ongoing staffing require substantial training. That training burden can slow start-up, raise labor costs, and affect productivity if the team isn’t properly skilled.

This is why the statement about requiring extensive operator training is the best answer. It captures a real, ongoing limitation that isn’t present in the same way with simpler or manual setups. In contrast, the idea that no maintenance is required is inaccurate, since CNC machines need regular upkeep. A low initial cost is also unlikely for CNC work—the upfront investment is typically higher. And CNC technology enhances, rather than hinders, flexible manufacturing because programs can be changed to produce different parts with relatively quick setup.