ORIGINAL: gene737
Sorry to hear of your prop problems. I have used Master Airscrew and APC props for a long time and have never experienced a failure in flight. Can't imagine what is causing you to tear up all your stuff.
This is why I decided to post. This is very unusual for me.
I've been running RC aircraft since 1983 and I have never had a propeller fail, with only one exception: Probably 25 years ago I was running a Cox TD .051 powered hot-rod and the engine seized due to excess rpms. The prop unscrewed itself and shot across the sky (you could hear it).