A repair can look level when the filler is first applied and reveal a shallow dip later. If wood filler sinks after drying, adding a large second blob is rarely the best first step. Check whether the material has finished drying, whether the cavity exceeds its intended depth, and whether the wood beneath it is stable. Those observations help you choose between a thin corrective layer and a different repair approach.
Confirm that you are seeing a depression
Look across the repair with light coming from the side. A change in color or gloss may look like a hollow even when the surface is level. Compare the contour with an undamaged area and, where it will not scratch the finish, use a clean straightedge without pressing into the patch. Assess shape separately from color before deciding what needs correction.
Distinguish surface dryness from full readiness
The top of a patch may feel dry while material below it still needs time. Read the exact filler instructions for permitted depth, drying conditions, recoating, and finishing. Do not borrow a drying time from a different formula. Keep the furniture undisturbed under the stated conditions and reassess before sanding or covering the repair.
Check how much material went into the cavity
A deep cavity filled in one pass may behave differently from a shallow scratch. Some fillers are intended for thin cosmetic repairs; others allow deeper applications under specific conditions. Follow the stated layer limits. Where staged filling is permitted, allow each application to reach the required condition before adding the next rather than trapping wet material beneath a fresh layer.
Inspect the wood and old repair around the dip
Look for loose particles, soft wood, lifting veneer, a moving joint, or filler that separates at the edges. Another cosmetic layer cannot stabilize a damaged joint or moisture-swollen board. If the underlying material is loose or the furniture part carries a structural load, address that issue before treating the surface. Valuable pieces and uncertain finishes merit professional assessment.
Choose a furniture repair paste suited to the task
The SEISSO 36-piece wood furniture repair kit with resin fillers and putty is currently listed with multiple filler colors and tools for wood surface repairs. Compare the supplied instructions with your furniture material and repair depth; the kit name alone does not establish compatibility with every coating or cavity.
Test the next layer on a concealed area
Before correcting the visible patch, confirm that the filler can adhere to the existing repair and surrounding finish. Use a hidden test area or comparable scrap. Follow the preparation and cleanup method for that exact formula. Avoid unapproved solvents, heat, water, or thinning agents, and do not mix unrelated filler systems to change their consistency.
Add only the correction the surface needs
If the existing patch is sound and the instructions permit recoating, prepare it as directed and apply a controlled amount into the low area. Work with a small spreader and keep excess off intact finish. Do not sand a wide halo around the repair to compensate for an uneven application. Allow the correction to dry before evaluating its profile again.
Match the finish after the shape is stable
Judge the final contour before adjusting color or applying a compatible finish. Follow the filler and furniture coating instructions for any sanding, touch-up, or protective layer. Test the complete sequence out of sight first. A well-matched color can still show if the sheen differs, so check the result from normal viewing distance as well as under side light.
What if the patch sinks a second time?
Pause and revisit depth limits, drying conditions, adhesion, and substrate movement. Repeatedly adding material can conceal the cause without solving it. Record the product, application dates, approximate depth, and observations so you can ask the manufacturer a precise question. Once the repair is stable, keep those notes with the kit for future touch-ups.
