Find the Source of the Wobble
Place the chair on a truly flat surface, such as a known straight tabletop or a leveled floor, then gently press each corner. Note which leg lifts or shifts to isolate the wobble.
Find the Source of the Wobble
Hold each leg and wiggle near the seat rails and stretchers. Listen for creaks and feel for movement inside mortise and tenon joints. Movement here usually signals dried glue or worn joinery.