Back earlier in the year, I was working in my shop spindle turning on my wood lathe; and my lathe chuck caught my watch band, pulling my left wrist into the chuck which was rotating at approximately 3000 rpms. The teeth on the chuck went straight to bone, and they chewed a strip about 4" in total length just between two arteries no more than a 1/8th inch from either one. My doctor told me if the chuck had of gotten either artery I wouldn't have made it to the hospital alive. Fortunately for me, when the lathe chuck caught my watch band, it jerked me off balance; and I fell forward, my weight releasing the watch band. Now I have some nice scars to remind me when and when not to wear a watch.