Good Sandpaper for Wood: Mineral, Coat and Cost Per Sheet (2026)

Good sandpaper for wood is an aluminum oxide or garnet sheet with an open coat, bought grit by grit rather than in one big assortment. Silicon carbide wins only for sanding between finish coats. Grit numbers also change meaning between the P and CAMI scales. This guide covers mineral, coat, grit scale and what each sheet costs.

Best All-Round Sandpaper for Wood

For bare wood, the combination worth paying for is a tough mineral, an open coat and a stearate layer, because that is what keeps a sheet cutting instead of clogging. Manufacturers describe these traits in very similar terms, so the brand matters less than checking the listing for all three. We have not run our own sanding trials on these sheets: everything below comes from manufacturer statements (Klingspor and Mirka) and live Amazon listing data pulled on 2026-10-07.

Abrasive Types for Wood: What Each Mineral Does

The abrasive mineral decides how fast a sheet cuts, how long it stays sharp and what kind of scratch it leaves. These are the five you will see on packs, using the manufacturers’ own descriptions.

Mineral	What the manufacturer says	Where it fits on wood
Aluminum oxide	Klingspor: made by fusing bauxite, very strong and tough. Mirka: the most common sanding grain, sharp and tough enough for most jobs.	Default choice for bare wood, by hand or on a power sander
Silicon carbide	Klingspor: very sharp and hard, cuts well under light pressure, self-sharpening. Mirka: more regular and less brittle, gives a better surface finish.	Sanding between finish coats and intermediate fine sanding
Garnet	Klingspor: cuts very quickly when new, fractures to stay sharp, economical, mostly sold as sheets.	Hand sanding, end grain and final-finish passes
Ceramic	Mirka: forms new abrasive edges as it wears, built for demanding materials such as hardwood.	Heavy removal on hardwood with a power sander
Alumina zirconia	Klingspor: a high-performance alloy of zirconia in an alumina matrix, aimed at heavy stock removal.	Aggressive belt work, rarely needed for finish sanding

One correction to a common assumption: a more expensive mineral is not automatically the better buy for hand sanding. Garnet is the cheapest per sheet in the cost table further down, and Klingspor specifically recommends it for end grain and final passes, while ceramic is aimed at power-sander stock removal on hardwood, which most hand-sanding jobs never need.

Open Coat, Closed Coat and Stearate: Why Sheets Clog

Coat density is the least advertised and most practical spec on a pack. Klingspor says open coat covers about 50 to 70 percent of the surface with grain and resists loading on sticky materials and softwoods. Closed coat packs more grain on the paper, which suits finished wood and metal but clogs easily with sawdust. Mirka makes the same distinction: fewer grains give an open coating that resists clogging, more grains give good stock removal and a smooth finish.

Stearate is the second anti-clog layer. Mirka describes it as zinc or calcium flakes applied over the abrasive that prevent clogging and lengthen the life of the sheet. Klingspor sells stearated aluminum oxide for bare wood and stearated silicon carbide for between-coat sanding, where the stearate acts as a dry lubricant.

• Bare pine, cedar or other resinous softwood: open coat, stearated aluminum oxide.
• Bare hardwood: aluminum oxide, open coat or stearated, in the grit your step needs.
• Hand-sanding end grain or a final pass: garnet sheets are a low-cost option.
• Between coats of finish: stearated silicon carbide, which is covered in our guide to grit choice for lacquer finishes.

Grit Scales: Why P400 Is Not the Same as 400

A number alone does not tell you the particle size. Klingspor sells under two scales: FEPA, marked with a P in front of the number, and CAMI, the US scale, with no letter. The two match closely up to around 220 and then drift apart. The table shows Klingspor’s published average particle size for the P grades and the CAMI number it pairs with each.

FEPA grade	Average particle size (microns)	CAMI grade Klingspor pairs it with
P80	197	80
P120	127	120
P180	78	180
P220	65	220
P280	52.5	240
P400	35	320
P600	25.75	360

In practice, a US-labeled 320 sheet and a European P400 sheet are the nearest match, and a bare 400 with no P is a different, finer product than P400 on that chart. Check for the P before you mix brands in one sequence. The rule both Klingspor and 3M print is the same: do not skip more than one grit between steps. For which grit goes with which job, use the grit-by-job table in our guide to making wood grain stand out, and for specific finishes see grit for primer and grit for deck sanding.

What Good Sandpaper Costs Per Sheet

Pack prices hide a wide spread in what each sheet costs. We pulled live prices from the Amazon Creators API on 2026-10-07 for seven in-stock 9 x 11 inch packs and divided by sheet count.

Pack	Sheets	Price on 2026-10-07	Per sheet
Mercer garnet paper, 120A	100	$37.49	$0.37
Mercer garnet paper, 220A	100	$35.03	$0.35
3M Pro Grade Precision, 220 grit	20	$15.87	$0.79
3M Pro Grade Precision, 150 grit	20	$18.78	$0.94
Mirka Gold Pro Flex, P120	50	$47.95	$0.96
Dura-Gold Premium, 220 grit	10	$10.99	$1.10
Norton ProSand, 100 grit	20	$22.97	$1.15

Bulk garnet runs roughly a third of the per-sheet price of the branded 20-packs. As an example, one pack each of the Norton 100, 3M 150 and 3M 220 totals $57.62 for 60 sheets, about $0.96 each, while a 120A and a 220A Mercer garnet pack together are $72.52 for 200 sheets, about $0.36 each. Whether garnet or aluminum oxide is cheaper per job depends on how long each sheet lasts, which we have not measured, so treat the table as a price comparison only.

Sheets, Discs and Sanders

Flat sheets suit hand blocks, folding for contours and tearing to fit a quarter-sheet sander. If you sand with a random orbit machine, discs are the easier route, and the attachment style matters: our comparison of PSA and hook-and-loop discs explains which to buy, and DA sander versus orbital sander explains why those two names usually describe the same tool. After sanding, remove the dust before finishing; how to clean wood after sanding covers that step.

Wood Dust Safety When Sanding

Sanding turns wood into fine airborne dust, and OSHA states that breathing wood dust particles can cause allergic respiratory symptoms, other respiratory symptoms and cancer. Use dust extraction or a sander with a dust bag where you can, work with ventilation, and wear a dust mask or respirator rated for fine particles. Treated lumber adds its own concerns, covered in can pressure-treated wood be sanded safely. Source: OSHA wood dust overview.

Frequently Asked Questions

Is garnet or aluminum oxide better for sanding wood?

Neither is better in every case. Klingspor describes aluminum oxide as a strong, tough abrasive that suits most wood work, and garnet as a very sharp, economical grain that cuts quickly when new and suits end grain and final-finish sanding. Garnet is mostly sold as sheets, so pick aluminum oxide for power sanders and either one for hand sanding.

Is P400 sandpaper the same as 400 grit?

Not exactly. A P in front of the number means the European FEPA scale, while a number with no P is usually the US CAMI scale. Klingspor’s conversion chart pairs P400 with CAMI 320 and P280 with CAMI 240, so a sheet marked 400 with no P is not interchangeable with P400. Below about 220 the numbers line up.

What does stearated sandpaper mean?

Stearated sandpaper has a dry-lubricant layer on top of the abrasive that stops dust from packing onto the sheet. Mirka says the stearate is usually zinc or calcium based and applied as small flakes, and that it prevents clogging and extends life. Klingspor sells stearated aluminum oxide for bare wood and stearated silicon carbide for sanding between finish coats.

Why does my sandpaper clog on pine?

Softwoods such as pine are resinous and the sanding dust packs into the gaps between grains, especially on a closed-coat sheet. Klingspor says an open coat, which covers roughly 50 to 70 percent of the surface, resists loading on sticky materials and softwoods. A stearated open-coat sheet is the usual fix, and tapping or brushing the sheet clean helps too.

Bottom Line

Buy aluminum oxide or garnet in an open coat for bare wood, add stearate if you sand resinous softwood, and keep silicon carbide for between coats. Read the grit label for a leading P, and compare packs by price per sheet rather than by pack price. For sanding a whole floor or a deck, see how to sand and refinish wood floors.