Once you've been hit hard, it makes you think twice I have been hit 3 times with wood flying off the lathe. two times I had a bowl come off the cole jaws when finishing the bottom. One sailed across to the far wall of my shop and shattered into kindling. One other hit me square in the face shield, I was wearing, and then hit the floor and broke a chunk off the finished edge, ruining the bowl. The most dangerous one was I was turning a large piece of walnut, and a chunk of the tenon broke out, and the wood hit me hard square in the chest. That one stopped me for the rest of the day. I locked up the shop and went to the house. One can do everything right, and still the nature of the beast is that something can and at times does go wrong. Even though I have a face shield already, I just this week upgraded to a Sperian Bionic face shield. Got it from Amazon.com for $22.16 and boy it is really nice. The adjustments are of much higher quality than the AO safety version I own, and the frame around the lens is much sturdier, and it is just a much better unit. Had I not had on my face shield, who knows, I might be injured severly with loss of vision or something nearly as bad. Safety measures practiced consistently will always work, but failing to follow the rules may just get you into trouble, no matter how "experienced" you are. Stay safe everyone!