What should not be done after using an angle grinder?

Setting the grinder down while the disc or brush is still moving is unsafe practice and should not be done. When the tool is still in motion, there's a significant risk of injury or damage. The spinning disc can create a hazardous situation where it could come into contact with surfaces or personnel, potentially causing cuts, burns, or unintended property damage. This practice goes against safety protocols designed to protect users and the surrounding environment.

In contrast, unplugging the grinder is an essential step that should be taken to ensure that the equipment doesn't accidentally turn on while you're changing discs or performing maintenance. Wearing eye protection is a critical safety measure to prevent injuries from flying debris. Changing abrasives is a regular maintenance task that ensures the grinder operates effectively, but should only be done once the tool has completely stopped.