After reading a magazine article back in 2016 on the risk of “hangar rash” damage to the thin, trailing edges of composite propeller blades, David Ortero decided — “before even closing the magazine” — to buy covers to protect his new Whirlwind GA200L. The only problem was, that in scouring the internet, it appeared that nobody made such a thing. So Ortero simply went to his workshop and made his own.
Source: general aviationSock it to me