Glad you're cut was not a really bad bad one. When I got my first rotary cutter years ago, I think I had it about 3 weeks when I cut myself. I learned then to always close it when I lay it down, even if it's only for a few seconds. Now it is just automatic. Same as a dirty kitchen knife has it's own special place by the sink and out of the way of hands and not in the sink; learned that one the hard way too long time ago.