An OS .25 FX bit me good one day. No stitiches were requierd but it bled like a stuck pig. I had the glo starter in my pocket but forgot and left the chicken stick in the pits. The engine died while taxiing so I figured I'd just flip it over by hand. I didn't even feel it hit. My brother noticed it before I did and pointed it out. I looked down and blood was dripping from my finger. I was pretty lucky I guess. From then on I use a starter or chicken stick.