I know this has been a topic brought up from time to time, but I had an experience tonight in my shop that I feel obligated to share. I've been turning for roughly nine years or so. I've had pieces blow apart, bowls come off, etc....I never used a face shield until about 15 months ago. Tonight I had a piece break off and hit me directly in the face. Ive never taken a direct hit before. Had I not had that shield on, I don't want to think about what may have happened. The piece came from a glue block (square, not round which was my own stupid fault) about 1/2 x 3/4 x 4" at 1200 rpm. Just wanted to share, for those who do not use a shield, consider it. I got one of those bionic face shields for around $30 on amazon, worth every penny after tonight. For that price there's no reason not to use one. Be safe out there everyone.