A company called Revolution makes a heli blade covering material that works extremely well. It is made for just covering blades. It is available in several colors and is distributed by Horizon Hobbies. Very inexpensive and you get enough for probably 2 sets of 60 blades. Part number RVO0110 White, RVO0111 Red , RVO0112 Yellow, RVO0113 Black . I have used it several times on Raptor blades with absolutely no problems.