I had to laugh at your story (not the result tho') When I was about 8 years old, my mother was gone and I was never to use her treadle machine while she was gone. Of course, I did and sewed a needle through my index finger. Because I wasn't supposed to do it in the first place, I couldn't even cry to her when she came home, but oh my did it hurt. Jumped up and down and held it in cold water. To this day I have a tiny white spot on that nail just to remind me, so evidently I damaged the area under the nail.