Remove all old lawn chair webbing or canvas with the scissors.
Unroll 6 feet of rope from one spool. Hold the end of the rope at the back left corner of the lawn chair seat at the chair frame. Wrap the rope under the seat, over the right frame edge and back to the rope end. Tie a secure double knot, using the spool end of the rope.
Move the rope under and over the right chair frame edge again next to the first piece of wrapped rope, back to the left edge at the previous knot. Tie another double knot, using the spool end of the rope.
Continue wrapping and knotting the rope at the left edge of the chair bottom, keeping all wrapped rope strands as close together as possible. Add additional pieces of rope by tying square knots to connect the rope ends.
Wrap and knot the chair backing with the same technique, beginning at the top left corner of the chair back. Trim all excess rope ends with the scissors.