Should I sand wood with or against the grain?

On a flat solid-wood surface, sand parallel to the visible grain with light, overlapping strokes. Sanding across it can leave scratches that show under a finish. For curved details, use a small folded piece of paper with gentle pressure.

Which sandpaper grit should I start with?

For minor scratches on smooth bare wood, start around 120 grit, then use 180 and, if your finish allows, 220. If the wood is already smooth, begin at 180. Follow the wood and finish manufacturers' advice rather than sanding finer than necessary.

Can I sand a painted or varnished board with this method?

No. This guide is for known, unfinished solid wood only. Unknown, old or treated coatings can produce hazardous dust; painted and coated wood requires material-specific identification and safer methods. Never assume an old coating is safe to sand.

Why does the surface still look scratched after sanding?

Coarser abrasive scratches may remain if you skip grits, press too hard or leave old dust on the board. Vacuum away the dust, inspect in angled light and redo the affected area with the preceding grit before progressing. Very deep cuts may require a different repair.

Guides/Home/How to Sand Wood by Hand

How to Sand Wood by Hand

Smooth light scratches and prepare unfinished solid wood for finishing using a sanding block and a sensible grit sequence. Learn to follow the grain, protect yourself from wood dust and avoid sanding unknown coatings or treated material.

Updated Nov 11, 2026

35 min7 stepsBeginnernew

Close-up of a clean unfinished solid wood board showing the natural grain and shallow scratches before sanding.

AI illustration

Step 01 / 07

Check that the wood is safe to sand

Examine the entire piece in good light. This method is for clean, unfinished, solid wood with light machining marks or minor surface scratches. Identify the direction of the grain and inspect for cracks, loose splinters and thin edges. Do not sand unknown paint, varnish, old coatings, treated timber, engineered boards or suspected hazardous materials: dust and coatings may require specialist controls. If the piece is a valuable antique or has only a thin veneer, seek material-specific advice instead.

Guide progress1 / 7

1. Check that the wood is safe to sand
Instructional illustration generated with AI for Howmigo.
Examine the entire piece in good light. This method is for clean, unfinished, solid wood with light machining marks or minor surface scratches. Identify the direction of the grain and inspect for cracks, loose splinters and thin edges. Do not sand unknown paint, varnish, old coatings, treated timber, engineered boards or suspected hazardous materials: dust and coatings may require specialist controls. If the piece is a valuable antique or has only a thin veneer, seek material-specific advice instead.
2. Set up a stable, dust-controlled work area
Instructional illustration generated with AI for Howmigo.
Move the work to a well-ventilated area away from children, pets and food. Put down a protective sheet and support the board flat on a sturdy bench; clamp it with padded clamps so it cannot slip, keeping clamp faces away from the sanding path. Wear protective eyewear and a well-fitting particulate respirator appropriate for wood dust, following its instructions. Have a suitable HEPA vacuum or dust extractor ready. Never blow wood dust into the air.
3. Choose a sensible sandpaper sequence
Instructional illustration generated with AI for Howmigo.
For relatively smooth bare wood, start with 120-grit sandpaper to remove light scratches, then work through 180-grit and 220-grit for a finer finish. If the board is already very smooth, begin at 180 grit; do not start unnecessarily coarse. The exact final grit depends on the wood and the finish manufacturer: very fine sanding can interfere with some stains or finishes. Use fresh paper and check that its abrasive surface is not clogged or torn.
4. Wrap the paper around a sanding block
Instructional illustration generated with AI for Howmigo.
Fold a piece of your starting-grit paper around a flat, comfortably sized sanding block, with the abrasive face outward. Hold the ends securely so the sheet stays taut and flat. A firm block helps keep broad faces level and prevents your fingertips from digging grooves. Work by hand for carved details and curves, using a small folded piece with light pressure instead of forcing a flat block into the shape.
5. Sand lightly in the direction of the grain
Instructional illustration generated with AI for Howmigo.
Place the block flat on the board and move it in long, controlled strokes parallel to the visible wood grain. Use light, even pressure and overlap each pass so you do not create dips or stripes. Keep the block moving and avoid rounding corners unintentionally. Stop every few passes and inspect the surface across the light; aim to remove superficial marks, not unnecessary layers of wood. Do not try to sand away deep gouges, unstable cracks or other structural damage.
6. Progress to finer grits
Instructional illustration generated with AI for Howmigo.
Remove the loose dust with a HEPA vacuum before changing grits, so coarser particles do not keep scratching the wood. Repeat the same light, grain-parallel passes with 180-grit paper until the earlier scratch pattern is gone. If appropriate for the planned finish, repeat with 220-grit. Check the surface in raking light after each change. Give edges only one or two gentle passes by hand if they feel sharp; do not round them over unless that is part of the intended design.
7. Remove dust and inspect the finish-ready surface
Instructional illustration generated with AI for Howmigo.
Vacuum the board, bench and protective sheet carefully, then wipe the board with a clean lint-free cloth or the dust-removal method recommended by the finish manufacturer. Do not use compressed air or dry-brush clouds of dust into the room. Check the piece from several angles in good light and run a clean hand gently along the grain to find rough spots. If you spot an isolated scratch, touch it up with the appropriate grit and clean again. Keep the wood dry and dust-free until you apply the intended finish according to its instructions.