How did slingshots become tendons?

The fixing method of the rubber band at the eye of the slingshot is as follows:

1, prepare a small piece of leather, 2 cm long and 4 cm wide; Prepare two rubber bands, one long and one short; First, cut two small holes on the prepared small piece of leather near the left and right edges with scissors;

2, directly through one end of the long rubber band; The rubber band passed through is slightly elongated and folded in half, about1cm long;

3. Wrap the short rubber band around the long rubber band folded in half;

4. Fold the rubber band with both hands, and the binding effect is tight;

5, about three or four times, resist the small leather and rubber band folded in half, and start knotting and fixing;

6, forcibly shorten the rubber band, the rubber band is elastic and not easy to break, and the knot is not easy to loosen;