What is the recommended safety practice when changing drill bits?

When changing drill bits, the recommended safety practice is to disconnect the air hose. This precaution is crucial because it ensures that the tool cannot accidentally operate while you're working on it. Tools that are powered by air can be unpredictable, and if they are left connected, there is a risk of accidental activation, which could lead to serious injuries.

While wearing safety goggles and using gloves are generally regarded as good safety practices in a workshop setting, they are not specifically the most critical step in the context of changing drill bits. These practices do enhance personal safety against debris or sharp edges but do not address the immediate risk of the tool being powered unexpectedly. Therefore, disconnecting the air hose is the primary and most effective way to safeguard against unintended tool operation during this procedure.