After I got a new bow I realized that it would be much easier to string it with a proper stringer instead of using my legs. Since I had some paracord lying around, I decided to make my own.
This design is based on most stringers you see around, the only thing different is that the cap doesn't lock so tight over the limb extremity, but it works just fine for stringing my bow. (70" with 40 lbs draw weight).
I used TPE for this print hoping I could get a little more "grip" from the parts, but the main reason I would recommend using flexible is so you don't risk scratching your limbs.