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Thanks. Actually, I discovered I had the blades backwards. I actually reprinted them with the blue PetG because I forgot to include the embedded nut and I couldn't get it to mount solidly without it. PetG is stronger, more heat resistant, and will stand up to the Sun's UVs better. I plan on spraying it with a coating of UV marine grade protectant once I finish. The black is PLA which I might replace. I'd like to finish the MKII. I think it will simplify making the MKIII once you publish that. Great project. I'm learning a ton on how these turbines work, the electronics and printing. Otherwise, Thanks again! I'm just starting to learn CAD, so maybe I can design my own.