If you're looking for a way to lock your Hamilton Beach coffee grinder, there are a few things you can do. First, you can remove the grind setting knob. This will prevent anyone from being able to adjust the grind size. Alternatively, you can unplug the grinder from the power outlet. This will also prevent it from being turned on. Finally, you can put a piece of tape over the power button. This will prevent the grinder from being turned on accidentally. By taking one or more of these steps, you can be sure that your grinder will stay locked and safe.