How To Fix A Wobbly Chair
Flip your chair over and check to see if all the legs are screwed in properly. If they aren’t, tighten the screws and then check to see if the wobble is fixed. If any of the screws won’t tighten, replace them with screws that are slightly longer so that they bite into new wood and tighten properly. Be careful not to over tighten as this can split the wood!
If this technique doesn’t work, get out the hot glue gun and heat it up.
Play with the chair a bit to see which leg is causing the problem. Try using a piece of folded paper or cardboard under the leg that you think is the problem to see if the wobble stops. Once you have determined which leg (or legs) is at fault, flip the chair over again.
Lightly sand the foot of the chair.
Using the hot glue gun, smear a bead of glue on the bottom of the legs that need lengthening. Set down the glue gun and wait 20 seconds. The glue should be warm but not burning hot and you can smooth out the bead at this point.
Flip the chair back over and test to see if it still wobbles. If it does, repeat the hot glue technique until you have the bead of glue to the right depth to fix the problem. You may need to chip off the glue if it is too thick. Use a paint scraper or putty knife to chip the glue away and start the process over again.
You could also try using a sticky felt pad on the bottom of the chair leg that is too short. Trouble with this method is that sometimes the pad is either too thick or too thin. The felt pads also tend to fall off after a while leaving a very sticky residue that is difficult to remove. The hot glue can be manipulated to exactly the right depth. The glue will also stay in place for as long as you need it and it won’t scratch up the floor either.