What is a significant risk of not maintaining tools in metalworking?

Not maintaining tools in metalworking can lead to an increased likelihood of tools breaking and causing injury. Tools that are not properly cared for can suffer from wear and tear, leading to malfunction during operation. For example, a dull blade may bind or snap, while a poorly lubricated machine may overheat and fail. Both scenarios pose a significant risk not only to the worker handling the tool but also to others in the vicinity. Proper maintenance, such as regular inspections, cleaning, and lubrication, ensures tools operate safely and efficiently, thereby reducing the hazard of injury due to equipment failure.

While the other options highlight valid concerns associated with tool maintenance, they do not directly address the immediate safety implications that arise from using malfunctioning tools, which can be life-threatening in a metalworking environment.