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this right here is a terrordial propeller I donamp;#39;t know about to test it out these were developed by MIT in their Lincoln laboratory and theyamp;#39;re supposed to be a lot quieter than your standard propellers so before we get started let me show you how I made these first up I had to model these out in fusion and then I went through and I 3D printed them these uh were a bit difficult for instance theyamp;#39;re pretty thin and then I annealed them this makes the plastic a lot more harder to break and then I also went through and I completely coated these propellers in nail polish next up was time to test so first up let me just do a stock test with the propellers regular prop sound are we ready to give this a shot Iamp;#39;m curious I was even gonna take off here we go hereamp;#39;s what it sounds like