Although at first using a 3D printer pulley sounded like a good idea to me, considering many pulleys are made out of thermoplastics like ABS and Nylon, I was under the misguided conception that these parts would conform to the tolerance and temperature standards of an electric skateboard. After 5 to 10 minutes of riding, the pulley had been absolutely destroyed, resulting in something that looks like this:
Now, I’m not bashing @JuniorPotato93, being the grandmaster of 3D pulley design, but it does raise some serious considerations when building a board, along with the potential riding dangers, seeing as how this occurred while riding down the street at 30 mph. I looked down while riding to find a melted pulley which was hot to the touch and significantly pliable. I would have dismissed this most likely if the board had continued to function, but it took only 30 seconds more for the second pulley to melt and get pulled off as well. For this reason, I don’t see the benefit of using a 3D printer to make a pulley for an electric skateboard, or for any high-speed application for that matter.