My hands certainly have battle damage on them! Only one scar from a prop strike is still visible. I have had 3 in total. A Cox 049, k&B .65, and a supertigre .60. I hope I got the sizes right.
Most of the nasty is from working on cars in my college years. The grime is from my day job.
I do have a sad story to share about a prop strike that happened recently. A dear friend had a pusher style electric canard he wanted test flown at my dads flying field. After a brief check he was ready to launch for me. I noticed the pacement of his hands were too close to the prop for my comfort and told him about my concerns. He assured me that he used this technique before with no bad results and not to worry. I ignored my gut feeling and after a run-up, he launched the plane right through his right hand. The prop sliced about ten deep gashes from his wrist to his middle finger. We had a first aid kit and patched him up. He insists that it was not my fault but I still feel horrible about it. The lesson I learned is if you ever sense that someone may be at risk of a prop strike when hand launching, speak up! It is better to insult someone's pride then to have a prop assault someone's hand.
My friend was out the following tuesday flying with no stiches. He is an oldtimer and used red chilli poweder to stop the bleeding and speed healing. Talk about home remedies!
JB