Create the sling.
1: Tie string around the 4 nails on the sling template.
2: Cut a 10 cm piece of duct tape, center it sticky-side up under
the strings.
Press the strings into the tape.
3: Cut a second piece of tape and tape it over the first, capturing the strings.
4: Pull one nail to release the string.
5: Cut two narrow strips of duct tape, use them to shape the duct tape into a pouch.
