when I started in this hobby along time ago lol I would occasionally rap my finger witha wood prop ..I cussed swore I wouldnt do that again and after a few cuts finally started witha chicken stick until startes came out..and I reas the stories here and once again it reminded me just because its electric doesnt mean you wont get hurt if your careless. I am also flying my first giant gasser and my instructor just flips it with his hand ..man I am not that dumb yet..the prop is 22 inches ouch.. and the plastic ones on my electric have had razor sharp egdes until I sanded them.