Yes. Learned my lesson about dull blades! I was cutting along and the cutter hit the ruler, jumped up, and cut across my left pointer cutting into the middle of my nail down into the nail! AAARRRRGGGG!!!!
I grabbed my finger and started jumping up and down, much to the delight of my 18mo old- who thought "mommy be funny"!
It was sore for a good week, and eventually the nail grew out ok and now I always use a sharp blade!