How to Match Sanding Pads: a Sandpaper Grade

The short answer

The decision rule is two moves, in this order: match the pad to your tool first, then match the grit to how much you are removing. A random orbital sander wants a hook-and-loop pad that takes grab-and-release discs, because you will be swapping grits as you move down the sequence; a straight, fixed body wants a holeless pad that holds the paper flat against an open base. The one number that governs the second move is the grit: P80 for stock removal, P150 to P240 for blending, P400 for the prep pass, and P2000 for the fine cleanup before a finish goes down.

Two scenarios where the rule bends: a very flat, very wide panel, where a fixed body with the holeless family outcuts anything the orbital can do on a long straight path, and a job where dust capture is the real constraint, because the fine grits throw the lightest dust and the finish fails if the work gets dusty. If your job is ordinary wood prep, start the pair at P80 to P120 and keep the pad's disc family matched to the sander it sits on; the pad and disc families we supply are in the sanding disc range.

Two habits make this repeatable instead of a guess: name the grit standard you are buying to (FEPA or ISO 848), and confirm the pad actually fits the tool's plate before the paper ever touches wood. That second habit is what separates sanding pads that cut clean from the ones that swirl, skip or burn, and everything below is the reasoning behind those two moves. The habit is cheap. The cost of skipping it shows up in a finish that is sanded, re-sanded and still dull under the coat.

How a sanding pad and its paper work together

A pad by itself does not cut. It is a carrier: a plate with a surface that grabs the paper, built to hold the paper flat, to flex with the work, and to keep the tool's motion honest. The cutting is done by the paper on top of it, and that paper is a coating of abrasive grain held by a bond to a backing cloth. Understanding all three parts of the paper, plus the pad it sits on, is what lets you match the pair instead of guessing.

The paper side has three working parts, and each one has its own job:

🪨 The grain is the cut. It is usually aluminium oxide on wood work, and its size is set by the FEPA or ISO 848 grit number: the higher the number, the finer the grain and the lighter the cut. The standard the number is measured against is what keeps two suppliers from quietly shipping you two different papers, and the reference is at the FEPA grit standard (ISO 848).
🔗 The bond is how much of the grain's sharpness survives the job. A flexible bond lets the paper conform to a curved surface and keeps the whole face cutting; a firm bond keeps the paper flat and the cut even on a flat panel, and it wears slower. The bond is the reason a P2000 paper can run cool on a curved moulding without glazing, while the same grit on a firm bond would load up and stop.
🧵 The paper's backing cloth carries the grain and takes the load. It has to be strong enough for the grit: coarser grits carry more pressure, so a coarse paper on a weak cloth delaminates early and sheds grain in one patch. The cloth strength is one of the things we confirm against your grit in the sandpaper range before an order ships.

The pad side has three families of sanding pads, and each one shapes how the job feels:

🧲 Hook-and-loop pads take a disc that grabs the pad surface and releases when you peel it off. That is the fast-swap pad, and it is the family an orbital tool wants, because the whole point of the orbital is to move down grits without stopping to glue or re-tape anything. The grip on the loop face is what keeps the disc tracking true through the random orbit pattern.
🕸️ Mesh pads are a flexible, open-weave surface that stretches over contours. They take paper that presses into the mesh, so they flex harder than a rigid plate and stay cooler over a curved work; the open weave also lets the dust leave the pad face instead of packing under it. The 5-inch mesh disc family we supply is built for exactly this flex.
⬜ Holeless pads are a flat, open plate with no center hole, and they run in a fixed sander body that does not have a hole in its base. They hold the paper the flattest of the three, which suits wide, flat boards, and they are the pad you pick when the tool is a straight body rather than an orbital.

If you are new to specing the pair, compare the 5-inch mesh sanding discs against the 6-inch non-hole sanding disc and note how the mesh flexes and the solid plate does not, before you commit a grit. The difference in hand feel between the two is the whole argument for the three families in one sentence.

One more piece of construction is worth knowing: the paper's edge. A disc that is cut to its own shape leaves a clean edge when it comes off the pad; a paper that is longer than the disc you are using will show its own edge in the work, as a hard line the tool path does not cross. That is a match detail, not a quality complaint, and it is one reason to buy the paper in the same family as the pad rather than as a loose sheet you are cutting yourself.

Reading the disc: the numbers that matter on the label

Before the grit gets chosen, the disc and the body have a few numbers that have to line up, and they are the ones people skip and then live with for the life of the tool. A hole-pattern disc sits on a plate of its own diameter, and the holes are cut for the body's base, so a disc cut for one hole pattern does not line up with a body that has a different one, and the misalignment shows up as a spot on the finished surface that the disc never cut. The two numbers to match are the plate diameter and the hole count, and the 8-hole 5-inch family is the one most orbital bodies are cut to take.

The label on the disc carries a fixed set of fields, and the order to read them is:

The grit — the FEPA or ISO 848 number, the one that governs how much the pass removes.
The grain — aluminium oxide on wood work, the standard grain for the sequence, because it cuts honest and loads slowly.
The plate diameter — the number that has to match the body's base, because a disc cut for a different diameter does not sit level.
The hole pattern — the cut the body's base was made for, and the one that keeps the cut even across the surface.
The maximum working speed — the one number that has to come from the disc, not from a guess; confirm the rated speed against the model and keep the tool below it.

For the hole-pattern families we stock against the common orbital bodies, the sanding disc range lists the diameters and the hole counts, and the 5-inch 8-hole hook-and-loop disc is the reference disc to match against your body. The abrasives glossary defines the label terms, so the whole team reads the same label the same way and nobody is guessing what a field on the disc means.

Grit sequences by material and finish

The grit sequence is the real plan, and it is where most of the money either gets spent well or wasted. The rule underneath every sequence is that each pass leaves a scratch finer than the one before it; the moment you jump a step, the coarser scratch survives under the finish and shows through. Here is the sequence for a hardwood cabinet top going to a matte finish, run on an orbital with hook-and-loop discs:

P80 to take off the uneven stock and get back to roughly flat. This is the pass that removes; you want the cut, not the look.
P150 to even out the P80 scratches so the surface is uniform, not just flat.
P240 to start the blend, so the cut is fine enough that the finish will sit evenly.
P400 for the real prep pass: the scratches are now light enough that they will not show under a coat.
P2000 for the final cleanup: a 2000 grit pass de-raises the P400 marks and opens the grain lightly, which is what the finish is going to sit on.

The P2000 pass is the one people skip and then wonder why the top looks dull under the finish; it is not doing a P400's job, it is doing the job of getting the surface into the state the finish wants. If you are not sure, P400 does more of the real prep and P2000 is the cleanup on top.

For a wide, flat panel board, the tool changes the plan. An orbital is not the natural fit for a long, flat board, because the circular path shows up as a pattern on the wide surface; the pair that suits it is a holeless pad in a fixed body running P150 then P400 across the panel, because the flat plate keeps the whole board even and the straight path does not leave an orbital pattern. That is the specific reason this pad family exists on the tool: it is the pad for the body that does not have a hole, and the work that suits that body is flat and wide. The woodworking sanding use page walks through the tool choice by board size, and the 6-inch non-hole sanding disc is the disc family that pairs with it.

For a smaller job on a curved moulding, the mesh pad is the match, because it flexes over the curve and the P2000 paper holds the whole face on the work without the gaps a rigid plate would leave. The 5-inch mesh sanding discs are the family to pair with it, and the grit ladder for the moulding is the same one as the cabinet, just run on the flexible pad.

A few rules that stay true no matter the board:

Soft wood cuts deeper than hard wood at the same grit. Pine and similar soft species take a P80 pass deeper than oak does, so on soft wood you start at P120 and the sequence shifts up one step.
The finish dictates the last grit, not the tool. A matte finish wants the grain opened lightly, which is the P2000 pass; a gloss finish wants the scratches removed more completely, which is a P400 to P2000 pair run under lighter pressure.
The pad dictates the tool, and the tool dictates the path. An orbital leaves a circular path, a fixed body leaves a straight one, and the path shows up on the finish. Match the tool to the finish you are aiming for, not just to what is on the bench.

For the grain and bond side of these sequences, the woodworking sanding use notes give the grits by board and by finish, and the sanding disc range shows the pad families in the grits from P60 up to P5000.

Grit by material: a quick reference

Material shifts the starting grit even when the tool stays the same. The list below is the starting point, not a rule, because the finish you are aiming for and the thickness of the stock both shift the sequence one step up or down.

🪵 Hardwood, solid — P80 to P120 to remove, P150 to P240 to blend, P400 to prep, P2000 for the cleanup. This is the bread and butter of the sequence, and where most of the grits in your packs spend their life.
🌲 Softwood — P120 to start, because the soft grain takes the P80 pass too deep and you end up sanding the valleys back up. The same ladder above, shifted one step finer.
📋 MDF and engineered panels — P120 to P220, keep the disc moving and the paper clean, because MDF is sugary and packs a fine grit fast. A mesh pad is the match here, because the open weave sheds the loading and the pad face stays cutting.
🪟 Plywood and laminates — P150 to P240 for the face, P400 before any finish goes on. The core layers of a plywood sheet cut at different rates, so the goal is a uniform face, not a fast one; a lighter touch beats a coarser grit.
🧪 Refinishing over an old finish — P180 to P320, depending on how thick the old coat is. You are sanding through a film, not stock, and the grit that breaks the surface even is the one that keeps the new finish from trapping the old texture under it.

The rule underneath the list is the same as the rule under every sequence: match the grit to the material and the finish, and let the pad family decide how the cut feels. On a curved part, the mesh pad is the pick; on a wide flat panel, the holeless family; on everything an orbital runs, hook-and-loop. For the grains we stock against each pad family, the sandpaper range is where to confirm before you order, and the woodworking sanding use notes give the sequence by material.

Speed, dust and the safety side of the pair

The safety story of the pair is three parts: the tool's speed, the dust the grit throws, and the pad's fit to the body. Each one has its own rule, and each one is where a failure starts when a step gets skipped.

The tool's speed is the first part. A random orbital sander runs at a speed that is set by the tool, and the disc it carries has to be suited to that speed; the number to check is the disc's maximum working speed, and the rule is that the tool's speed must sit below it, not above it. If you are not sure, run the tool at no load and confirm the speed is below the disc's printed maximum before the disc touches wood; that is the one number to confirm against the model before you order, and the sandpaper range lists the disc families we confirm a maximum working speed against before an order ships.

The dust side is where high grits quietly become the riskiest part of the job, because a P400 or P2000 pass throws the finest dust in the sequence and the dust is the most easily breathed. A pad marketed as a dustless pad does not make the dust go away; it changes where the dust lands, keeping more of it at the work instead of in the air. The honest control is three things: the tool's dust port on, a collector at the work, and the right respiratory protection for the load, because the dust from a fine grit is not the same dust as the dust from a P80 pass. The general PPE requirements are a good baseline at OSHA 29 CFR 1910.132 — PPE general requirements, and a plain reading of the dust itself is at abrasive dust and airborne particulates. For the tool side of it, the portable power tool rule is at OSHA 29 CFR 1910.244 — portable power tools, and a practical setup read for the pad and the body is at CCOHS: "Abrasive Wheels" occupational health answers.

The pad's fit to the body is the third part, and it is the one that fails first when someone skips a step. A rigid plate in an orbital body does not sit flat the way the body was made for, and a mesh pad on a fixed body leaves gaps on a curve; both show up as an uneven cut and, worse, as the disc walking on the body at speed. The fit rule is the same one as the flap disc world: the pad's plate has to match the body's base, and any mismatch is a problem to solve at the tool, not at the paper.

Two failure modes deserve their own line. A disc that does not sit flat on the body will walk and the cut will skip; a body run above the disc's rated speed will heat the bond and the paper will glaze and stop cutting. Both start at the match, and both are cheaper to prevent at the bench than to fix after the surface is spoiled. Under compliant speed, correct fit and the right protection, the risk of the tools is reduced, not eliminated; the habit that does most of the work is reading the disc, reading the tool, and only then starting the job.

Cost, wear and lead time of the pair

On cost, the number to manage is cost per surface finished, not cost per disc. A P80 disc is not a like-for-like comparison with a P2000 disc, because the P80 removes stock and the P2000 removes a light layer of scratches; the P2000 has more of the grain per square inch and the paper is finer, so it wears differently and the two are not bought on the same line. The useful comparison is how many boards you get per pack of each grit in your sequence, because that is the number that lands on the finished part, and it is the number to ask for when you buy the sequence on a sanding disc range basis rather than a handful of loose sheets.

On wear, the two grits at the ends of the sequence age differently, and the middle grits age between them. A P80 disc on hardwood runs down the grain first, because the grain is doing the real work and the disc is just carrying it; a P2000 disc on the same wood lasts longer per board, because it is removing less, but it is the one that shows dust and embedded grit fastest, so its life is limited by how clean the work is, not by how hard you press. The practical read: if a P2000 disc stops cutting on a clean surface, the disc is spent; if it stops cutting on a dusty one, the dust is the problem and the fix is the collector, not a new disc. A shop we work with keeps this exact habit: the P2000 pack is opened last in the sequence, and the P2000 disc is not let to touch a dusty board; the habit is what keeps the fine grit honest and the last pass looking like the first one.

On the dust side of the cost story, a dustless pad earns its place in the sequence by keeping the work clean between passes, which is what protects the fine grits; the capture happens at the port and the collector, and the pad is the part that keeps the dust from settling back on the board while the next grit is loaded. That is the honest reading of the marketing word, and it is the one to hold the pair to when you compare two suppliers.

On lead time and a branded run, two things set it. In stock grits in the common pad families ship fast; an off-grid grit or a pad family you do not hold in the same run takes longer, because the paper, the pad and the grain all have to line up. For an OEM or private label order, add time for the label, the packing and any spec sheet you want on the box, and confirm the minimum order quantity and the lead time with sales before you plan the run; the request a quotation page is where that conversation starts, and the OEM & private-label service page walks through what we can put on the packing and how the order minimum works.

A habit that saves money on the sequence: buy the grits you use in the same run on the same day, so the pads and the papers are from the same batch and the cut feels the same across the sequence. A P150 from one batch and a P400 from another will not always feel the same at the bench, and the sequence is only as even as the batch behind it. The sandpaper range is where to confirm the batch and the grit against your sequence before you order the lot.

When the pair cuts less than expected

Under cutting on the pair is usually one of five things, and each has a different fix; the list is the one to walk before you blame the disc. Most under cutting on sanding pads is a match problem, not a bad disc, and the diagnosis below is in the order the causes show up on the floor.

Skipping a grit. Going from P150 to P400 leaves P150 scratches under the finish; add the P240 step and the surface clears. The skip is the most common reason a P2000 pass does not clean up the way it should.
The pad does not flex with the work. A rigid plate on a curved moulding leaves gaps, and the gaps are the spots that do not cut; switch to the mesh pad and the whole face comes down on the curve.
The paper is not suited to the grit. A P2000 paper on a weak cloth delaminates early; the cloth has to carry the grit, and that is a match detail to confirm with the supplier against the grit, not a quality complaint.
The tool's speed is above the disc's rated speed. The bond heats, the paper glazes, and the cut stops; confirm the no-load speed is below the disc's maximum and run it there, or drop to a coarser grit that takes the heat.
The pad is in the wrong body. A holeless-family plate in an orbital body does not sit flat; the fix is the body, not the paper.

For each of these, the sanding disc range shows the pad family and the grit to reach for, the woodworking sanding use notes give the sequence by board and by finish, and the abrasives glossary keeps the terms straight so you and your team are diagnosing the same problem. The thread that runs through all five is that the pair is only as good as the grit, the pad, the body and the speed you matched it with before the job started; most of the complaints are really mismatch complaints wearing a grit's name.

A worked example: the sideboard top sequence

The first time we ran this sequence on a maple sideboard top for a shop we work with, the boards came off the router roughly even but not flat enough for a sprayed matte lacquer, and the plan below is the one that brought them to the finish line without a second sanding round. The board was about 900 by 550 mm, the tool was an orbital with a hook-and-loop pad, and the finish was a matte lacquer that wants the grain opened and the scratches out.

The sequence, pass by pass:

P80, first pass, light pressure and moving disc — the board came up to roughly flat. The P80 disc is doing the removal; you watch the dust colour, not the time.
P150, full coverage — the P80 scratches evened out and the board stopped looking hand-sanded and started looking sanded. This is the pass that gets skipped most, and the one the finish shows when it is skipped.
P240, light pass — the blend pass, and the board was now ready for the collector to do its work; the dust off the P240 is already fine, so the capture had to be running before this pass.
P400, the prep pass — the scratches were now light enough that they would not show under the coat, and the board was even to the hand.
P2000, the final cleanup — a 2000 grit skimmed the P400 marks off and opened the grain lightly; the board was now in the state the lacquer wanted to sit on.

Two things in the run that are worth writing down. First, the P400 pass left fine dust on the board, and the P2000 disc picked it up and the disc glazed halfway through; the fix was the collector running at the work and the board wiped down before the P2000 pass, not a new disc. Second, the board was wide enough that the orbital path was starting to show near the edges, and the fix was the holeless family on a fixed body for a final straight pass over the panel, because the straight path does not leave the circular pattern the finish would have picked up.

The lesson of the worked example is the one the whole article is built on: the grit sequence is the plan, the pad family is the execution of the plan, and the two move together. A P2000 disc on the wrong pad does not fail the finish the way a P2000 disc on the right one does not save it; the match is what carries the work to the coat.

Grit standards: naming the scale in the enquiry

The grit number is only meaningful when you name the scale, and that is where two suppliers quietly end up shipping two different papers. The FEPA or ISO 848 scale is what most international buyers quote, and the number on a P2000 disc is a P2000 on that scale; the reference for what the scale actually is and how the number maps to the grain size is at the FEPA grit standard (ISO 848). When you buy the sequence from more than one source, state the scale in every enquiry and ask which one the stock is on, because a P400 on one scale and a P400 on another are not the same grain size.

The practical reason it matters is that a wrong scale gives you the wrong cut on the finish. If you think you are buying a 2000 disc to clean up and the supplier is quoting on a coarser scale, you will arrive at the bench with a grit that removes more than you planned and the finish will show it. Two moves prevent it: name the standard in the enquiry, and keep the shop to one scale so the grits on the shelf are comparable to each other. For a bulk or branded order, the scale is a field on the spec sheet, not a footnote, which is why it is one of the things the request a quotation form asks for, and it is the same field the OEM & private-label service page walks through for a run.

The numbers that matter on the disc, in the order to read them: the grit, the pad family it is cut for, the cloth, and the maximum working speed. The maximum working speed is the one that has to come from the disc, not from a guess, and it is the one to confirm against the tool before the first pass. The sandpaper range lists the families with the numbers, and the abrasives glossary defines the terms so the label is read the same way by the whole team.

FAQ

What grit do I start with on a hardwood board? In most cases P80 to P120, depending on how uneven the stock is; P80 when there is real stock to remove, P120 when the board is close to flat and you are starting the sequence. The sequence then steps down, not across.

What is the difference between P1500 and P2000 for a finish? P1500 is the last of the coarse-to-fine prep grits and does the real cleanup before a heavy coat; P2000 is the fine cleanup that de-raises the P400 or P1500 marks and opens the grain lightly for the finish to sit on. You run P1500 first and P2000 on top, not the other way around.

When does a holeless pad beat the other pads? When the tool is a fixed body with a flat, open base and the work is wide and flat; this pad holds the paper flattest and the straight path does not show up on the finish. On a curved work or an orbital tool, the mesh or the hook-and-loop pad is the match instead.

Can I use sanding pads on a random orbital sander? Yes, and that is the natural pairing: the orbital wants a hook-and-loop pad, because the whole point of the orbital is to move down grits without stopping to re-tape or re-glue the paper. The pair is the orbital with the hook-and-loop pad and the disc family it takes.

How do I match the paper grit to the finish I want? The finish dictates the last grit in the sequence: a matte finish wants the grain opened lightly, which is the P2000 pass; a gloss finish wants the scratches removed more completely, which is the P400 to P2000 pair. Match the last two grits to the finish and the earlier grits to how much stock is left.

Does a dustless pad mean no dust at all? No. A dustless pad changes where the dust lands, keeping more of it at the work; the capture is the port and the collector, and the protection is the respiratory side of the PPE, sized to the grit you are running.

What grit standard should I name in an enquiry? Name FEPA or ISO 848, plus the pad family and the maximum working speed to confirm against the tool; that keeps the order from being mixed with a different grit scale and the pair from arriving cut for the wrong body. The reference is at the FEPA grit standard.

How do I buy sanding pads in bulk? Send the grits in the sequence, the pad family, the cloth and the scale to the supplier, and ask for cost per surface finished per grit so the sequence is bought on the number that lands on the finished part; the sanding disc range and the request a quotation form are where a bulk order starts.

Before you buy

A short compliance and purchasing checklist for the pair. This is a reminder, not a substitute for your own site rules, and under compliant use with the right protection the risk of the tools is reduced but not zero.

✅ Confirm the tool's no-load speed is below the disc's maximum working speed before every use, and confirm the disc's rated speed against the model you are ordering.
⬜ Check the pad's plate matches the tool's base — a holeless pad in a fixed body, a hook-and-loop pad in the orbital it is cut for — and use a rated adapter where one is needed, never a paper that is longer than the disc.
🛡️ Fit and keep the tool's guard and the dust port on at all times; the guard is the first defence and the port is where the dust control starts.
🧊 Wear eye and face protection, and use dust capture at the work plus the right respiratory protection for the grit's dust load, because a P2000 pass throws the finest dust in the sequence.
📐 Name the grit standard (FEPA or ISO 848) and the pad family in every order so the sequence is not mixed with a different scale or a disc cut for the wrong body.
🔬 Check the disc's cloth and bond are suited to the grit, and ask for the inspection report or the cert against the batch you are ordering, so the cloth carries the grit you are paying for.
📦 Keep the pads and the papers dry and flat in storage, away from the heat that softens the bond, and follow the pad maker's install notes for the body you are running.
📮 Confirm lead time, minimum order and packing for a sanding disc range or private label order, and start the conversation with the quotation form.

If you tell us the material, the finish you are aiming for and the tool you run, we can help you pick the grit and the pad family to start from. Send the three and we will work the sequence with you on the request a quotation page, and we will confirm the disc's rated speed against the model before it ships.