Why antique legs wobble
A wobbly leg is usually not the problem in itself. In most cases, the joint where the leg meets the frame has loosened. Mortise-and-tenon joints, dowel joints and glue blocks in the corners all work loose over time, as old glue ages and the wood moves with the seasons. A cracked leg is less common, but it’s also a cause. Check the joints before you assume the leg is at fault.
Check the joints before the leg
Look at each joint where a leg meets a rail or the seat. Gently rock the piece and watch for movement at the joint, not in the middle of the leg. Look for gaps, a glue line that has come apart, or a change in color inside the gap. That color change is often wood that was hidden under the finish, so it shows where the joint has moved.
Check the frame as well. Measure the two diagonals of the assembled frame. If they aren’t equal, the frame is out of square, and a leg can look wobbly even when the joints are sound.
Regluing a loose joint with hide glue
For antiques, use hide glue. It’s the conservation-standard choice because it’s reversible. A future restorer can soften it with heat or moisture and take the joint apart without damaging the wood, and it bonds to old hide glue. Liquid hide glue is easier to use than the traditional hot kind, which needs heating.
Modern PVA glue is strong, but it isn’t reversible, and it won’t bond to old glue or finish. Using it on an antique can make a later repair harder.
Taking the joint apart
Hide glue softens with heat, moisture, or both. Warm water or a warm vinegar solution can soften it, and a damp cloth over the joint followed by gentle heat can help. Work slowly. Tap the joint apart with a rubber or dead-blow mallet, and don’t force it, because forcing can split the wood. Label each part as you remove it so it goes back in the right place.
Cleaning old glue back to bare wood
Scrape the old glue off both surfaces, then finish with fine sandpaper if needed. Don’t enlarge the hole or change the shape of a tenon. A sloppy fit leads to a loose joint again. Check that both surfaces are clean and bare before you apply new glue.
Clamping and checking square
Apply the glue to both surfaces, and work quickly once the parts are in place. Clamp the joint with bands, shaped cauls or a rope tourniquet, depending on the shape. Put wax paper between cauls and the wood so the squeeze-out doesn’t stick. Check the frame is square, with equal diagonals, before the glue sets.
Leave the joint clamped for several hours, and let it cure for about 24 hours before you put any stress on it.
Repairing a cracked or broken leg
Look at the break before you choose a fix.
- A clean break along the grain. Long-grain-to-long-grain glue joints are very strong. Clean the break, glue it and clamp it. Use hide glue on an antique so the repair can be reversed later.
- A short-grain or end-grain break. Glue alone is weak here. Reinforce the joint with a dowel or a loose tenon, or splice in new wood.
- A missing piece. Splice in new wood. A scarf joint, with a long, shallow angle, is a common method. A slope of around 1 in 8 is a typical guide, though the right angle depends on the design.
If a tenon is slightly loose, build up its cheeks with thin veneer shims glued on, then refit the joint. Avoid packing the gap with sawdust or matchsticks. Those fills are weak and often don’t last.
Uneven legs
If a piece rocks on a floor you know is flat, its legs may be uneven. Set the piece on a flat surface, and mark the legs that don’t touch. Trim the long legs in very small amounts, checking often. Don’t cut several legs at once, since it’s easy to end up with a piece that’s too short. On pieces where trimming would change the design, felt pads or glides may be a gentler fix.
Sanding table legs after the repair
If the finish is intact and just needs cleaning, you may not need to sand at all. If sanding is needed, work with the grain and go from a coarser grit to a finer one. Use a sanding block or a folded sheet on turned or carved legs, and avoid rounding over crisp edges or details. Let the glue cure fully first.
Keep the sanding light. Sanding can cut through a thin finish or veneer quickly, and on an antique, removing the original finish can lower its value. Antique furniture restoration explains how to keep it. For a refinish, see how to restore a veneer furniture surface.
Broken sofa leg
A sofa or upholstered chair leg is often bolted or screwed to a mounting block, so start by checking how it’s attached. If the leg has snapped at the top, where it fits into the block, the block may need regluing or replacing. If the leg is broken partway along, a clean break can be glued and reinforced with a dowel.
Upholstered furniture often has fasteners hidden under the fabric, so take photos before you remove anything, and be careful not to pull on the frame.
Is wicker furniture worth repairing?
Wicker is a different material, and whether a repair is worth it depends on the frame underneath. A wicker piece with a sound frame and a few broken strands is often a reasonable repair. A piece whose frame has rotted, cracked through or badly deformed is harder to bring back, and the cost can exceed the value of the piece. The joint and leg methods above apply to wood frames and bases, not to the woven material itself. For the weave, see how to restore wicker furniture.
Next steps
For a leg that’s rotted rather than loose, read how to repair rotted wood furniture. For a split that’s the same kind of problem, see will wood glue fix split wood. Chairs with loose rungs follow the same joint approach, and how to fix a loose chair rung covers that.