I didn't cut myself, but I did pinch the s--- out of my fingers a couple times. One thing that might have helped me is that I removed the light and took it upstairs to the dining room table to install the visor. Might be that my anxiety level goes up when I'm in the garage, but I felt more relaxed at the table (oh yeah, the wife was sitting across the room from me, so that probably served to filter my language!).