What Grit Sandpaper for Wood? A Complete Guide

Sanding is one of the most important steps in woodworking. Whether you're building furniture, refinishing a table, restoring cabinets, or preparing raw lumber for paint or stain, choosing the right sandpaper grit determines how smooth and professional the final result will be. Using the wrong grit can leave scratches, waste time, or even damage the wood. Using the correct progression ensures faster, easier, and cleaner results.

So, what grit sandpaper should you use for wood? The answer depends on your project stage: rough shaping, surface leveling, finishing prep, or final polishing. This guide will explain each stage, when to use it, and how to select the right sandpaper.

Understanding Sandpaper Grit Numbers

Sandpaper grit refers to the size of the abrasive particles. The lower the number, the coarser and more aggressive the cut. The higher the number, the finer and smoother the finish.

• Low grit = fast material removal
• High grit = smooth surface finishing

Grit numbers for wood usually range from 40 to 400+. Each grit step removes the scratches left by the previous grit.

Sandpaper Grit Chart for Wood

Grit Range	Category	Use on Wood
40–60	Extra Coarse	Heavy stripping, shaping, removing paint
80–100	Coarse	Leveling rough lumber, removing saw marks
120–150	Medium	General smoothing, prep before finishing
180–220	Fine	Final sanding before stain or paint
240–320	Very Fine	Between finish coats, light finishing
400+	Ultra Fine	Polishing, final touch-ups

1. Coarse Grit Sandpaper (40–60 Grit)

Coarse sandpaper removes material fast and is used when the wood surface is very rough or damaged.

Use for:

• Removing old paint or thick finishes
• Shaping edges
• Flattening uneven boards
• Removing glue residue

⚠ Tips: Always sand with the grain, apply light pressure, and expect visible scratches. Follow with finer grits.

Recommended Tool: At this stage, a 6-inch Blue Ceramic Sanding Disc (50pcs) works great for both hand and machine sanding. It is durable, long-lasting, and efficient for flattening surfaces.

2. Medium-Coarse Grit (80–100 Grit)

This grit is ideal for leveling rough lumber and removing scratches left by coarse grits.

Use for:

• Smoothing rough wood
• Preparing reclaimed wood
• Removing small imperfections

Browse our 80 Grit Sanding Discs for this stage.

3. Medium Grit (120–150 Grit)

This is the transition stage from shaping to smoothing. It removes scratches from coarser grits and prepares the wood for finishing.

Use for:

• Furniture projects
• Cabinets
• Shelves
• Hardwood floors

⚡ Tip: Most woodworking projects stop at 120–150 grit before moving to finer sanding.

Recommended Product: For detailed or narrow areas, a Purple PSA Sandpaper Roll (2-3/4 inch x 59ft) is very handy. You can cut it to size, attach it to hand sanding blocks, and sand edges or curves efficiently.

4. Fine Grit (180–220 Grit)

This grit range is crucial before staining or painting. It smooths the surface and removes remaining scratches.

Use for:

• Final sanding of raw wood
• Preparing wood before stain or paint

Shop our 180 Grit and 220 Grit sanding discs for pre-stain finishing.

5. Very Fine Grit (240–320 Grit)

Once finishing starts, sanding changes purpose—from shaping wood to smoothing coatings.

Use for:

• Sand between coats of varnish or polyurethane
• Light surface refinements
• Removing raised grain

Tip: Sand lightly to avoid cutting through previous coats. Browse our 240 Grit and 320 Grit options.

6. Ultra Fine Grit (400+ Grit)

Ultra-fine grits are for polishing and achieving smooth, professional finishes.

Use for:

• Final polishing of hardwood furniture
• Mirror-like surfaces
• Musical instruments

Tip: Wet sanding is often used at this stage. Shop our 400 Grit Sanding Discs.

Sanding Sequence for Wood

A proper sanding sequence avoids scratches and ensures a smooth finish.

Examples:

• Rough lumber: 80 → 120 → 150 → 220
• Furniture refinishing: 60 → 100 → 150 → 220
• Cabinet prep: 100 → 150 → 180 → 220
• Between finish coats: 220 → 320 → 400

Never skip too many grits.

Hand Sanding vs Machine Sanding

Hand sanding: Best for detail work, edges, and curves.
Machine sanding: Faster material removal on large flat surfaces.

Even if using machines, always finish with hand sanding for the best surface.

Types of Sandpaper for Wood

• Aluminum Oxide: Durable, long-lasting, ideal for hardwood.
• Garnet: Softer cut, good for hand sanding.
• Ceramic: Aggressive and long-lasting, perfect for heavy stock removal.

Special Considerations

• Softwood: Start at higher grits (120) to avoid deep scratches.
• Hardwood: Can start at 80 or 100. Finish at 220+.
• Sanding before staining: Stop at 180–220 grit for best absorption.

Common Mistakes

• Skipping grit steps
• Sanding across the grain
• Pressing too hard
• Not cleaning dust between steps
• Using dull sandpaper

How to Know You're Done

• Smooth to the touch
• No swirl marks
• Even color tone
• Dust-free before finishing

FAQ: What Grit Sandpaper for Wood?

What grit sandpaper should I use for wood?

It depends on the stage: use 40–60 grit for heavy stripping and shaping, 80–100 grit for leveling rough lumber, 120–150 grit for general smoothing, 180–220 grit for final sanding before stain or paint, 240–320 grit between finish coats, and 400+ grit for polishing and final touch-ups.

What grit sandpaper should I use before staining wood?

Stop at 180–220 grit before staining. This grit range smooths the surface and removes remaining scratches while leaving the wood open enough for even stain absorption. Going finer than 220 can close the wood grain and cause uneven staining.

What grit do I use between coats of varnish or polyurethane?

Use 240–320 grit between finish coats to lightly smooth the surface, remove dust nibs, and improve adhesion for the next coat. Sand lightly to avoid cutting through the previous coat.

Should I start sanding softwood and hardwood at the same grit?

No. For softwood, start at a higher grit (120) to avoid deep scratches. For hardwood, you can start at 80 or 100 grit and finish at 220 or higher.

What is the correct sanding sequence for wood?

Follow a progressive sequence and never skip more than one grit step. Common sequences: rough lumber (80 → 120 → 150 → 220), furniture refinishing (60 → 100 → 150 → 220), cabinet prep (100 → 150 → 180 → 220), between finish coats (220 → 320 → 400).

What happens if I skip grit steps when sanding wood?

Skipping grit steps leaves deep scratches from the previous coarser grit that the finer grit can't efficiently remove. These scratches often become visible once stain or finish is applied. Always progress through grits sequentially.

What type of sandpaper is best for hardwood?

Ceramic abrasive is the best choice for hardwood — it's aggressive, self-sharpening, and lasts significantly longer than aluminum oxide on dense materials. Aluminum oxide is also a good option and is more economical for general hardwood sanding.

Should I sand with or against the wood grain?

Always sand with the grain. Sanding across the grain leaves deep scratches that are very difficult to remove and become highly visible under stain or finish.

When should I use wet sanding on wood?

Wet sanding is typically used at ultra-fine grits (400+) for polishing hardwood furniture or achieving mirror-like surfaces. It helps produce a finer, more consistent scratch pattern and reduces dust.

How do I know when I'm done sanding wood?

The surface should feel smooth to the touch with no swirl marks, have an even color tone, and be completely dust-free before applying any finish. Run your hand across the surface and inspect under a raking light to catch any remaining scratches.

Conclusion

Choosing the right grit sandpaper is critical for professional woodworking. Coarse grits shape wood, medium grits smooth surfaces, fine grits prepare for finish, and ultra-fine grits polish. Following a proper sanding sequence and using the right sandpaper type makes every project easier and more precise.

For best results, we recommend using the Blue Ceramic Sanding Discs 6-inch, 50pcs for flat or large surfaces and the Purple PSA Sandpaper Roll 2-3/4 inch x 59ft for curves, edges, and detailed work.