What type of operational issues can poor surface quality indicate?

Poor surface quality often highlights underlying issues with machine maintenance. When a machine is not properly maintained, it can lead to a range of problems such as vibration, misalignment, and inadequate lubrication. These factors directly affect the machining process, resulting in rough or inconsistent surfaces on the finished product. Regular maintenance ensures that the machine operates smoothly and within the specified tolerances, which in turn contributes to achieving the desired surface quality.

The other options do not directly correlate with surface quality. Effective tool life management generally relates to using tools until they are worn out, while inadequate training would likely cause operational errors rather than surface defects. Similarly, high-quality materials usually yield better surface finishes, so if poor quality is evident, it suggests that material issues are less likely.