Well I found out yesterday that a rotary cutter cuts more than fabric. The almighty left pointer finger. Trip to the ER, and they could not sew it back on. I cut the inside right up against the nail. I remembered a few hours later that I think I had the cutter on the ruler instead of next to it, I was extremely tired, and accidents happen that way. Hubby went to clean blood up in sewing room RIGHT AFTER IT HAPPENEDand there was the side of my finger laying there, and couldn't get it to stop bleeding, so grab it and to the ER. i GUESS IT COULD HAVE BEEN WORSE