Wood furniture is beautiful and durable. It has the toughness to withstand the day-to-day rigors of life and still retain its natural beauty. One of the more common problems with wooden tables and chairs is that through use, time or never having been cut correctly at the factory, they can develop wobbly legs. Don’t throw that old chair away. This problem can be corrected with a little ingenuity, patience and know-how.
Check the floor where the chair(s) is situated. Move the chair(s) out of the way. Use a long 4-foot level and lay it at different angles in the area of the floor that the chair sits on. If you are leveling multiple chairs, do the same for those areas of the floor as well. No, this will not level your chair legs, but it will let you know how much of the wobble is floor-related. Rotate the chairs to check each leg.
Stand your chair on the flat surface. Take your thin block of cardboard, paneling or plywood and place it on the flat surface beside the bottom of the chair leg. Use a pencil, scribe or piece of chalk to mark your legs one at a time. Place your pencil on the leg of the chair where the block is being held against it. Rotate the block around the leg while holding the pencil in place.