The goal of this project was to build a figure 9 style rope tightener for camping. The Figure 9's are normally around 5 dollars at your local Walmart. I have tested this rope tightener in the house, but have yet to test it in the wild. I will test it this weekend hopefully. Print, add a rope, and enjoy. Update: The rope tightener worked great at Bonnaroo. It held the guide lines of our flag pole tightly for 4 days without loosening.Print the rope tightener with 100% infill. Add a rope. Tighten your lines.