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A table that rocks on an uneven floor and a chair with a loose joint can feel similar at first. They need different repairs. One may only need a suitable foot adjustment, while the other may be unsafe to use until its structure is restored.

Take the furniture out of service while you inspect it. This matters especially for chairs, stools, and anything people sit or stand on. Testing a suspect joint with body weight can turn a small defect into a fall.

Separate floor problems from joint movement

Place the item on a firm, reasonably level surface and press lightly near each corner. Watch the feet and the connections above them. If the whole piece rocks without visible joint movement, an uneven floor or unequal foot height may be the cause.

Move it to another location and compare. A wobble that changes with the location points toward the floor. A leg that shifts relative to the seat or frame points toward a connection problem.

Check for missing glides, damaged adjustable feet, or debris trapped under a foot. Replace a glide with a compatible part rather than stacking loose scraps beneath a chair leg.

Inspect the hardware before tightening

Turn the item over only if you can do so safely, protecting the finish with a soft surface. Look for bolts, corner brackets, screws, and threaded inserts. Photograph the arrangement if several different parts are involved.

Identify the correct driver or wrench. Some furniture uses metric hex hardware, while other pieces use inch sizes. A nearly fitting key can round the recess before the bolt becomes snug.

Look for cracks, bent brackets, pulled-out inserts, or elongated holes. Those are material failures, not merely loose-fastener problems. Tightening may conceal movement briefly without restoring strength.

Tighten in a controlled sequence

For a sound bolted assembly, follow the maker's tightening procedure if available. Bring the connections together gradually, working around the frame rather than fully tightening one corner while the others remain skewed.

Support the parts in their intended position. If the frame is twisted during tightening, the furniture may remain uneven even with secure hardware. Avoid using a power driver for final tightening on small furniture fittings.

Stop if an insert turns in the wood or a screw spins without gaining grip. Do not compensate with a larger fastener unless a suitable repair method specifically calls for it.

Recognize glued-joint failures

Traditional wooden chairs often rely on glued dowels, tenons, or other fitted joints. A visible gap or movement at one of these joints usually needs proper disassembly, cleaning, and regluing. Driving a screw through the outside may split the wood and make a later repair harder.

Adding glue around the outside of a closed, dirty joint rarely reaches the surfaces that need bonding. The repair must suit the joint and the loads it carries.

For valuable furniture or a chair with several loose connections, a furniture repair professional is often the sensible choice. Cracked load-bearing members may need replacement rather than adhesive alone.

Check the result without taking chances

Return the furniture upright and inspect all feet on the floor. Apply modest hand pressure from different directions while watching the repaired connections. There should be no clicking, opening gaps, or shifting hardware. Finding none is not a load test or proof that a cracked chair has been restored. Seating with suspected structural damage needs the maker's repair method or qualified assessment before it returns to use.

A chair with unresolved movement should remain unused. For a table, also check that any extension leaves and locking mechanisms work as intended. Revisit recently tightened hardware after ordinary use according to the manufacturer's guidance, especially on furniture that was newly assembled or moved.