RE: Propeller Safety
I share your pain.
Nothing like an accident to jolt our brains back to thinking while working with R/C engines. In my case, I was breaking in a new OS-46 FX by adjusting the high speed needle from rich to less rich at full throttle. During my no thinking period, I thrust my hand in the spinning propeller resulting in cuts to my thumb, pointer and index fingers. I have the scars and still have a numb spot on my thumb, but at least for now, I am much more aware of how easy it is to ruin a good day.
DaveB