And wear your shoes! Someone I know dropped her cutter and it cut into the top of her foot. Husband being helpful decided it wasn't in nrrd of stitches --- infection, trip to er and hours to get treated and stitched. So, rules of basic rotary cutting I think are protective glove and shoes that cover your feet. If you get cut --- get professional advice.and as with cell phones in cars, limit distractions while you are operating hazzardous machinery. LOL Razor blades of any sizr and shape are dangerous.