How to Choose Sandpaper Grit: Complete Guide (2026)
The 45 Pcs Sandpaper Assortment 80-5000 Grit Wet Dry Sandpaper Sheets, 9 x 3.6 Inch Sand Paper for Wood Furniture, Metal,... is our top pick for How to Choose Sandpaper Grit: Complete Guide. Wide range from 80 to 5000 grit covers rough shaping to polish finishing. For budget shoppers, the BLACK+DECKER BDERO Random Orbit Sander offers solid value at a lower price.
See Today’s Price →At a Glance
How to Choose Sandpaper Grit Buying Guide
Photo by cottonbro studio / PexelsSandpaper grit is a number — but that number represents a specific abrasive particle size and a specific job. Using 80-grit where you need 150 leaves visible scratches under finish. Using 220 where you need 80 takes ten times as long. The grit sequence matters as much as the grit itself.
What Grit Numbers Mean
Grit number is an abrasive particle count per linear inch. Higher number equals smaller particles equals finer scratch pattern. The practical breakdown: 40-60 grit for heavy material removal and stripping paint; 80-100 for shaping and removing tool marks; 120-150 for smoothing and preparing for stain; 180-220 for final sanding before applying finish; 320-400 for sanding between coats; 600+ for wet-sanding paint and automotive clear coat. For most wood projects, 80, 120, and 220 cover everything.
Wood, Metal, and Drywall Grit Requirements
Wood: start at 80 if there are mill marks or machine marks, otherwise 120. Finish at 180 for oil finishes, 220 for film finishes (polyurethane, lacquer). Going finer than 220 on bare wood closes grain pores and can prevent stain penetration. Metal: use aluminum oxide or silicon carbide paper designed for metal — standard wood paper loads instantly with metal particles. Start at 80-120 for rust removal, finish at 400-600 for bare metal prep. Drywall: 100-grit sponges for compound feathering, 120-grit sheets for seams — drywall compound is soft and rarely needs coarser than 100.
Grit Sequences: Never Skip More Than One
Going from 80 to 220 leaves 80-grit scratches that are invisible before finish and obvious after. The correct sequence for furniture-grade work: 80 → 120 → 180 → 220. Each step removes the scratches from the previous grit. Check progress by sanding at 45 degrees to the previous direction — when the diagonal scratches disappear, advance. For random orbital sanders, each grit change takes 2-3 minutes on typical hardwood. For final hand-sanding, go with the grain only.
Sheet vs. Disc vs. Roll
Sheet sandpaper is for hand sanding and pad sanders (quarter-sheet, third-sheet). Hook-and-loop discs are for random orbital and detail sanders — reusable attachment makes grit changes fast. Sanding belts are specific to belt sanders. Multi-grit variety packs like the 45-piece wet/dry assortment ($10) are cost-effective for occasional use across different grits. Single-grit 20-packs from 3M Pro Grade ($14-$20) make more sense for significant furniture work where you burn through one grit repeatedly.
Common Grit Mistakes
Starting too fine: using 150 to remove mill marks takes four times as long as starting at 80 and finishing at 150. Finishing too coarse: stopping at 120 before staining leaves visible scratches under penetrating stain. Using standard sandpaper on metal: it loads and stops cutting within minutes. Using old paper: clogged sandpaper burnishes instead of cuts — the surface looks smoother but grain is compressed rather than cleanly cut, resisting stain penetration.
Our Picks
45 Pcs Sandpaper Assortment 80-5000 Grit Wet Dry Sandpaper Sheets, 9 x 3.6 Inch Sand Paper for Wood Furniture, Metal,... (Best Value Variety Pack) — $9 See Price →
3M Pro Grade Precision 220-Grit Sandpaper 20-Pack (Best Fine-Finish Grit) — $14 See Price →
BLACK+DECKER BDERO Random Orbit Sander (Best Budget Orbital Sander) — $52 See Price →
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45 Pcs Sandpaper Assortment 80-5000 Grit Wet Dry Sandpaper Sheets, 9 x 3.6 Inch Sand Paper for Wood Furniture, Metal,...
“An excellent value assortment for projects requiring a full grit progression. The 5000-grit sheets are especially useful for automotive and final-polish finishing work.”
See Today’s Price →What we like
- Wide range from 80 to 5000 grit covers rough shaping to polish finishing
- Wet/dry construction works on both dry and wet sanding
- 45-piece count provides multiple sheets of each grit
- Works on wood, metal, automotive finishes, and resin
Watch out for
- Generic brand quality varies across grit range
- Higher grit sheets thinner and more prone to tearing
3M Pro Grade Precision 220-Grit Sandpaper 20-Pack
“3M's Pro Grade Precision line uses precisely sized mineral particles that cut 2× faster than standard sandpaper of the same grit. The anti-loading coating dramatically extends sheet life — you'll use ”
See Today’s Price →What we like
- Precision-shaped mineral cuts faster
- Anti-loading coating
- Consistent grit size
- Fits 1/3 sheet sanders
Watch out for
- Premium price vs budget sandpaper
- 220G only for finish sanding
BLACK+DECKER BDERO Random Orbit Sander
“The BLACK+DECKER BDERO100 is the best-selling sander on Amazon because it does everything well at the lowest price. Corded means consistent power for as long as you need it.”
See Today’s Price →What we like
- No battery needed — always ready to use
- Lowest total cost including power source
- 12,000 OPM for fast material removal
- Dust collection bag reduces cleanup
- Compatible with all standard 5" hook-and-loop discs
Watch out for
- Corded limits mobility
- Cord management around workpiece
- Less convenient than cordless for moving around project
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