Thanks HeavyArty! Glad to have someone who knows a lot about black hawks. Looking on the rotor and blades of my Academy MH-60L DAP kit, looks like a lot of work. But thanks for the photo you've provided, It gave me a good lead where to cut and modify.
One more thing I've decided to make a folded rotor blade is because of space also hehe. My room is not large enough to accommodate birds (yeah, I don't even have airplanes). But I really love helicopters. Sad news though is I can only keep 2 bladed helicopters (I really love the UH-1D. I have one but haven't built it yet) so I really need to create this folded rotor blades mod. Thanks again. : )