Fixing the Wood on a Swivel Chair
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Spread old newspaper over the floor to protect it from wood dust and place the swivel chair on it. Put on plastic disposable gloves. Take 320-grit sandpaper and sand the surface of the wood lightly, in the direction of the grain. Sand rough or raised areas, and remove wood dust with a paint brush.
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Fill in gouges, hairline cracks or splits in the wood with wood filler. Glue down lifted pieces of wood with wood glue. Hold in place, and let both filler and wood glue dry overnight. Sand the glued areas lightly with 150-grit sandpaper. Do not over-sand: do it just enough to remove excessive glue residue and even out the grain.
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Repair broken swivel chair legs. Use a 1/8th-inch dowel to fasten the broken pieces together. Take a 2-inch round wire nail and cut off the end with a hand saw. Hammer the nail halfway into the center of the chair leg. Take the opposite broken part and press into the nail. Pull apart, take nail out, and drill half an inch down.
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Drill a second half an inch into the opposite broken piece. Sand the dowel down with 150-grit sandpaper so that it fits into the hole on the opposite piece. Insert dowel into the hole, and fill in with wood epoxy glue.
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Press the pieces of the leg together, hold for a few seconds, then clamp in place. Remove excess glue with a clean rag before clamping. Leave the clamp on overnight, and remove the next day. Sand the surface of the break with the sandpaper and remove wood dust.
Replacing the Swivel
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Turn the chair onto its side. Push the lock system and unhook the base. If the pushing doesn't work, unscrew the base. Twist off the broken swivel. Use a pry bar if necessary to get it to come off.
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Take a hammer and insert a screwdriver into the base section where the clips are. Remove the clips, and any old clips remaining in other sections. Replace old clips with new clips by twisting them into where the old clips were.
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Lightly hit the swivel clips so that they lock into place. Use a soft-edged mallet to do this so that the clips do not break or split when hit. Place the new swivel onto the clips. Move the swivel so that it rotates completely around with ease. Lastly, put the base of the chair on top of the new swivel.