Start with the defect, not the finest paper
Sanding is a sequence of controlled scratches. Each stage replaces the marks from the previous stage with smaller ones; fine paper cannot quickly erase a deep machine mark. Inspect new, unfinished wood under light held almost parallel to the surface. Choose the least aggressive abrasive that removes the actual defect without unnecessary work. A relatively clean board might begin at 120 grit, while rough damage may require a coarser start. These are examples, not a mandatory recipe. Follow your finish manufacturer’s preparation range, especially when color absorption matters.
Make each grit earn its place
Work a small section until the original marks disappear, then move through sensible intermediate grits such as 120, 150, and 180 when suitable for the coating. Vacuum the surface and inspect it between changes. A faint pencil grid can reveal missed patches on fresh wood, but press lightly so the pencil does not leave grooves. Replace paper that has stopped cutting. Pushing harder on tired abrasive makes the process less predictable and can round the surface. Keep scraps of abrasive sorted by grit so a stray coarse piece does not restart the job.
Support the paper and protect the shape
For a flat face, wrap abrasive around a flat hand block and keep the block supported by the surface. Fingertips alone concentrate pressure and create shallow hollows. At an edge, reduce pressure and make only enough passes to remove the sharp arris if the design calls for it. Sand into corners with a shaped block rather than grinding away the adjoining face. Veneered panels deserve particular restraint because the decorative layer is thin. If the surface changes color unexpectedly, stop and check whether you have cut through it.
Inspect before coating
End with deliberate hand strokes along the grain where appropriate, then remove dust with suitable extraction and a clean brush or cloth compatible with the finish. Check from more than one direction. Scratches that are invisible under overhead lighting can become obvious beneath stain. Control dust at the source and use protection suitable for the work; never use your breath or compressed air to scatter it. Do not sand an unknown old coating as if it were fresh wood. Identify the coating and any hazardous material before deciding how to disturb it.
What to take with you
- Inspect between grits instead of sanding by the clock.
- Flat support preserves flat faces.
- A clean sample reveals scratches before the project does.
A few good questions
Is a higher final grit always better?
No. An overly polished surface can change how a stain penetrates, while extra sanding may add no visible benefit under a film finish. Test the full coating system and stop within its recommended preparation range.
Keep learning
Further reading from primary sources. Follow the instructions for your own tools and products.