How to Retie a Webbing & Coil Spring in Chair

Remove old twine tying the springs together. Check the existing springs, located below the upholstery and foam in the chair seat, to ensure they are still springy and tightly wound, not stretched out. If necessary, you can replace the springs by substituting new ones; springs can be placed on webbing anywhere on the seat except where there may be gaps in the webbing. Remove old springs by cutting the twine stitches and ties holding them together and to the webbing.

Tie springs to the webbing, using a needle and twine, by stitching around the bottom coil, and sewing the coils to the webbing, which is in a flat layer across the bottom of the chair supporting the coils. The coils should be securely fastened to the webbing at several points by stitching the bottom coil to the webbing using tight stitches.

Hammer nails into the square wooden seat frame of the chair — the wooden square comprising the seal of the chair and encompassing the webbing and coil springs — one on each side of each row of springs. These nails should protrude about 1/2-inch from the wood; they will serve as anchors for the tied springs.

Tie lengths of twine from nail to nail, creating a checkerboard pattern similar to a tic-tac-toe board, across the entire chair. There will be several straight rows of string going across the seat vertically and several going across it horizontally, forming a grid of small squares. These lines press the springs down to the appropriate height. Knot the twine on one nail; pull across the row of coils and tie at the other nail once the coils are at the desired height.

Tie springs together using clove knots. Cut a length of twine four times the length of the row of coils. Fold in half; attach the loop to the exposed nail at one end of the row of coils and hammer the nail in place. Thread the ends of the twine through the coil; knot by pulling the ends through the loop created by the doubled twine. Do so across the length of the coil row; when you reach the end, double back, knotting on the opposite side of each coil.

Repeat the clove knot pattern across each row of coil springs.