Collapse of Solid Wood Office Chair

The repair method for the collapse of a solid wood office chair should be selected based on the specific cause. The common causes and corresponding repair steps are as follows:

Aging and Deformation of Fillers

If the chair's fabric or leather is damaged and the internal sponge is flattened, the filler needs to be replaced. Prepare high-density sponge (thickness ≥ 5 cm, density ≥ 30 degrees), fabric or leather slightly larger than the original chair surface, a screwdriver, and a staple gun. Turn the chair surface over, remove the fixing fabric or nails at the bottom, peel off the old fabric, and take out the flattened sponge. Cut the new sponge according to the shape of the original seat plate, leaving a 1 cm margin at the edges. Place it flat and put the old fabric back on, ensuring the fabric is taut. First, use clips to fix the four corners, and then use the staple gun to staple every 5 cm along the edges. If the chair surface feels too hard after putting it back, you can add a layer of soft memory foam no more than 2 cm thick on top of the sponge to prevent the fabric from not fitting tightly.

Breakage of the Cross-Braces in the Wooden Chair Frame

Turn the chair completely over and remove all the screws to separate the chair surface from the legs. After cleaning the broken area, apply wood glue to the broken surfaces, align them, press them firmly, and use an F-clamp to hold them in place. Let the glue cure for 24 hours. When reinforcing, if the break is on a vertical surface, you can install an L-shaped metal corner brace that is 10 cm long and 3 cm wide, and fix it on both sides of the break with self-tapping screws. If the break occurs in the middle of the cross-brace of the seat plate, you can use a solid wood strip that is 15 cm long and 1.5 cm thick to span the broken area and tighten it with screws from the bottom to form a splint effect. After reinforcement, check if the four corners are level. If not, place rubber pads at the bottom of the corresponding chair legs.

Loose Screws or Detached Metal Connectors

• Tighten Loose Screws: Use a screwdriver or wrench of the corresponding size to tighten all the screws on the chair legs, armrests, backrests, etc..
• Repair Worn Screw Holes or Mortise-and-Tenon Joints: If the chair still wobbles after tightening the screws, it may be because the screw holes have become enlarged due to repeated disassembly. Take a toothpick or thin wooden stick, dip it in white glue, tightly insert it into the screw hole, and break off the excess part. After the glue has dried for 24 hours, screw the screws back in. For loose mortise-and-tenon joints, clean the old glue and debris from the tenon head and tenon eye, evenly apply new white glue, and then knock the tenon head back into place. Use a rope or clamp to hold it in place until the glue dries.