Well, I got smacked today. I got it from a piece of maple limb I was trimming with my wizz saw. It kicked a piece 1-1.5 inches diam, 10-12 inches into my face from approx. 5 feet away. I was pretty lucky in the way it hit me. I came away with cuts on the inside and outside of my bottom lip where my teeth were driven into it. I still have all my teeth, so that is good news. Anyway, be carefull which way the tool is spinning, so if you do get some kick-out it will spit away from you.