When you’re changing the blades on your saws, always ensure that the power source is inactive before starting. For corded saws, when you unplug it from the wall, don’t just leave it on the floor. Instead, put it in your pocket. That prevents the possibility of anyone accidentally plugging it in while you are working on it. Do the same thing with saws that use a battery; remove the battery and set it close to you while you are working. Stay safe around these tools as they can be dangerous.