Yeah, been there, done that with the rotary cutter. I had just bought a new one after my old one bit the dust! The blades are extremely sharp and it had me well and truly cut before I knew it. Strangely enough, I really didn't feel it right at first. My finger is still mostly numb in that particular area of the finger, but I promise you, I sure watch where my fingers are before I move the rotary cutter!
Jeanette