Gosh dang it if my damn Speedwinder handle broke - it is pretty old. It's possible to wind on cord without the handle of course, but much easier with the handle. So I decided to draw one up and print it out. PLA worked for me just fine, 4 outer layers and 25% infill worked well enough, but you may want to make it stronger but adding layers and denser infill. It's up to you. Can be printed with no supports just fine.