How to Choose Sanding Backing Pad: a Flap Disc

The short answer on choosing a Sanding Backing Pad

Every sanding backing pad choice comes down to two questions, and the first one is about your tool, not your disc. Question one: what does your sander take? The pad has to match the tool's mandrel diameter and the mounting method, or it will vibrate, walk, and print its orbit onto the work. Question two: how does your disc attach? A hook-and-loop disc wants the matching loop face on the pad, and a non-hole, adhesive disc wants a solid face with no separate fastening, which is the holeless pad route in short. One number governs the rest: the pad diameter has to equal the tool's mandrel diameter. Get that right and grit, thickness, and face style become a normal finishing decision. Get it wrong and no grit sequence will save the surface.

Why does a flap disc sit next to this at all, and why in the same title? Because the two come up in the same enquiry, and the difference is what keeps the order right. A flap disc carries its own backing plate, plastic, steel, or fiberglass, and it bolts onto an angle grinder through a centre arbor, not onto a sander's mandrel. A flap disc on a random orbital sander has no arbor to take, and a sanding backing pad does not bolt onto a grinder. So the first move is to pick the tool path: sander plus pad for wood, panel, paint and coating prep; angle grinder plus flap disc for weld caps, deburring, and metal surface work.

Two scenarios bend the simple rule. One is the non-hole disc, which needs the solid, adhesive-backed route and cannot fasten to a hook-and-loop face. Two is the random orbital finish sander, where the pad face has to be flat and even, because an uneven face turns the tool's orbit into rings on the panel. For the everyday panel and paint prep job, start from the pad size your sander takes, the grit band 80 to 240, and one flap disc on the steel or fiberglass backing for the metal side of the work. The range we supply is at the sanding disc range, and the abrasives glossary keeps the label terms straight when you are reading a spec.

How a Sanding Backing Pad Actually Works

A hook-and-loop pad is a two-part fastener. The pad carries one half of the fastener on its face, and the back of the disc carries the other. Snap the disc on, and the two faces hold it under the sander's orbit. A PSA, or peel-and-stick, pad is the same idea with an adhesive film on the face instead of hooks: peel the release sheet, lay the disc down and press it on. Both come in the 3, 4, 5, and 6-inch sizes the disc range is built around, and both are the route for a random orbital or a finishing sander.

The face style is where the pad quietly changes the finish, and it is the part of the label that is easy to miss:

Perforated Pad 🕳️ — a perforated pad has small openings on or through the face. Their job is to let dust and heat move past the disc instead of packing in between the disc and the pad. In practice that means less glazing on soft, sugary materials and a cooler pad in a long pass. The trade is that a little of the disc's backing is off the support surface, so the cut is a touch softer and the face wears faster.
Holeless Pad 🔲 — a holeless pad is a solid face with no centre opening, and it is the match for the non-hole disc. The 6-inch non-hole sanding disc sits on a fully supported face, and because nothing dangles off the centre, the support is the most even the two types can give. That makes it the strong pick for final sanding on panel and painted work, where flatness is what the next coat shows.

Thickness is the second quiet lever. The pad is a cushion between the disc's edge and the work: a thin pad reaches into tight corners and sits close to the surface, and a thicker pad gives clearance and reach but flexes under pressure, so the surface feel gets softer. On panel work the face has to be flat enough that the disc's edge does not dig past the face, because that edge bite is where the ring marks start. If you are not sure what thickness your sander wants, confirm it against the tool's spec before you order, because a pad that is too thick for the mandrel will walk as well as one that is too small, and both show up in the same ring pattern.

Which attachment wins is a money and a job question:

Hook-and-loop 🔄 — snaps on and off in seconds, one pad takes a whole run of discs, and the disc stays registered between changes. The cost is that the loop face wears with every swap, and a disc can pop loose the moment the orbit works on the edge.
PSA, peel and stick ✂️ — the adhesive film holds the disc down harder, and the disc itself is the cheaper consumable. For a high-volume line it is the economical route, with one catch: the adhesive residue on the face has to be managed, and a disc you want to reuse goes on a new sheet every time.

One number governs again: the pad face has to match the disc's back, or the disc will ride loose and burn an uneven pattern into the panel.

The grain on the disc side shapes how the pair behaves. Most finishing discs run aluminium oxide, the tough and tolerant grain for wood and painted surfaces. Zirconia alumina and ceramic show up on the high-wear and the metal side, and silicon carbide suits the softer, slicker materials that pack the open grains. A plain reference for the grain's material behaviour is at the properties of aluminium oxide, and the grit scale the labels are printed on is the FEPA or ISO 848 scale, which is the one to name in every enquiry so two suppliers do not quietly ship two different discs.

What a pad is not deserves one line, because it is where the misfits show up. A pad is not a disc, even when a seller bundles the two in one box: the pad is the mounting and the support, the disc is the abrasive. A loop face that is delaminating is a spent pad, and the fix is a new pad, not a new disc, because a clean disc on a bad face will ring the finish anyway.

Pad or Flap Disc: Match the Choice to the Tool

The title pairs a pad and a flap disc because both come up in the same enquiry, and confusing the two is the costliest mix-up in the aisle. The split is by tool, and by what the tool is built to do:

Sander, pad, disc 🪵 — wood, panel, paint and coating prep. The pad is what you choose, the disc is a consumable that snaps or sticks onto it, and the tool is a random orbital, finishing or palm sander that runs at a modest speed with the part doing the holding.
Grinder, flap disc 🧊 — metal, weld cap, deburring, surface prep. No separate pad: the backing plate is built into the disc and bolts to the grinder through the arbor. The tool is fast, two-hand, and the stored-energy hazard is a class above the orbital's.
Fiberglass-backing flap disc ⚡ — the high-speed grinder passes and the jobs that build heat, where a plastic backing would flex out of the cut.
Plastic-backing flap disc ✅ — the cooler, lighter grinder work where you are close to a finished surface and want the least pressure on the part.

In practice the tool you already own decides the path, and the buying list should split with it. A shop we work with runs both sides of the aisle: a finishing sander with 5-inch pads on the panel work, and an angle grinder with 115 mm and 125 mm flap discs on the weld and deburr work. The two lines do not share consumables, and the moment the teams accepted that, the mismatch complaints stopped coming in.

The flap side is where the backing does the work, so the backing choice is the real spec:

Plastic 🧊 — general finishing, cooler running, the pick when the disc is doing the light work and the tool is not at the top of its range.
Steel 🛠️ — demanding work, deburring and weld cap removal, where you want the flaps held tight under the pressure.
Fiberglass ⚡ — high speed and heat, where the backing has to hold its rigidity at the top of the tool's range and a plastic face would flex.

You can see the backings side by side at the flap disc range, and the disc side of the sander path, the hook-and-loop discs the pads take, is at hook-and-loop sanding discs. One last check that saves a wrong order: a flap disc and a pad are not interchangeable, even when they look like they fit. Confirm the tool, the arbor, and the mounting before you buy, and the two lines stay two lines.

Choosing by Material and Finish Line

Once the tool path is settled, the decision is grit, and grit is where the finish line is drawn. The governing habit is the same on a pad as on a flap disc: step the grit so every layer of scratch is finer than the one before it. The sequence that covers most panel and painted work:

P80 – P120 🛠️ — remove. Strip an existing coating to a sound surface and level the panel. This is the step where pressure matters and the pad takes the wear.
P150 – P240 🔩 — even out. Bring the high spots down so the whole panel sits in one band of scratch.
The 320 grit step 📏 — clean up. Soften the P240 marks and open the surface so the next coat keys in. Skipping it is the classic reason a cured coat shows the previous grit's scratches through it.
P600 and finer ✅ — scuff and final texture, before a fresh topcoat, or on a surface that is already close to its finish.

A worked example, the filled panel: after the filler has cured and been levelled, run P180 to P240 to bring it even, then the 320 grit pass to open the surface, then P400 to P600 before the topcoat. If the next coat shows coarse scratches through it, the fix is the missing step in between, not a coarser grit, and raking the surface sideways under the light is the fastest way to see which step you are missing. The whole point of the sequence is that every layer hides the one under it, and the moment you jump two steps, the coarser scratches survive under the next coat and show through.

Material shifts the starting grit even when the tool is the same. The starting points, not the rules, because the finish you are aiming for and the thickness of the stock both move the starting grit in one direction or the other:

🪵 Hardwood and panel — P80 to P120 to remove, P180 to P240 to even, P400 to P600 to bring it up. MDF loads a disc fast because it is soft and sugary, so a coarser grit and a moving pad beat a fine grit held in one spot.
🎨 Painted, re-sprayed work — P400 to P600 to scuff the cured coat, then finer to blend, and the panel and painted-wood sequences are walked through at woodworking sanding use.
⚙️ Mild steel — P60 to P120 to remove, P240 to P400 to blend. This is the bread-and-butter band for most metal work, and the sequence that the metal fabrication abrasive use notes walk through by material.
🧊 Stainless steel — P80 to P120 to remove, P240 to P400 to clean, and keep the pad and the disc dedicated, because embedded mild steel particles seed rust spots on the stainless later.
🟦 Aluminium and soft alloy — P120 to P240 to prepare, P320 to P400 to finish. Softer than steel, so a coarse grit digs deeper than you want, and a held fine grit glazes, so keep the pad moving.
🧱 Castings and rough stock — P40 to P60 to open the face, then P80 to P120, in steps rather than a jump, because a rough casting packs a fine grit.

The rule under the table is the one from the top of the article: match the grit to the material and the finish. Aluminium oxide is the default on wood and painted surfaces, zirconia alumina is the pick when the material packs the grain, and silicon carbide is the one for the slick non-ferrous work. Confirm the grain against your material in the sanding disc range before the order ships, and name the standard, FEPA or ISO 848, in the same line.

One Job, Two Tools: A Worked Example

The reason the pad and the flap disc sit in one article is that the same shop often runs the same job on both tools, and the consumable lines have to stay separate. Here is a week that shows the split, on a fabricated panel that has both a weld on it and a painted surface to prep:

Weld cap, flap disc on the grinder 🛠️ — P60 to P80 on the steel backing takes the cap down to roughly flush, with the tool at a speed below the disc's printed maximum and the guard on for the whole pass.
Debur and even out, still on the flap 🔩 — P100 to P120 on the same backing evens the ground area and starts blending it into the parent material, so the weld stops reading as a raised line.
Blend, P240 on the flap 📏 — the transition is brought into the plate, and this is the step that decides whether the weld shows under the light once painted.
Panel strip, pad and disc on the sander 🪵 — a 5-inch pad with a P80 to P120 hook-and-loop disc strips the existing coat on the painted surface, and the pad takes the wear while the disc keeps registration.
Even and open, P180 to P240 then P320 on the sander ✅ — the panel is brought into one band, and the P320 pass opens the surface so the topcoat keys in without lifting.
Final scuff, P400 to P600 ✨ — the topcoat or the filler is opened for the next layer, and the surface is even enough that the next coat does not show the grit underneath.

The discipline that keeps this from becoming a mess is the one the consumable lines enforce: the flap grits live on the grinder side, the pad and disc grits live on the sander side, and the two do not cross, because a pad that has run on the weld dust will scuff the panel with embedded metal, and a disc that has run on wood resin will not cut the steel the way the grit says it will. A shop that gets the split right plans the grit once, per tool, and the week runs on the plan instead of on the disc that happened to be on the bench.

The one place the split gets tested is the hand-off between the two tools, when the weld is ground and blended on the grinder and the same panel goes to the sander for the paint prep. The hand-off has to be clean: the weld area on the sander side gets the same grit steps as the rest of the panel, not a coarse grit that chases the weld texture, because the panel is what has to look even under the light, and the weld is the part that has to disappear into it. For the grit bands on the metal side, the flap disc range is where the steel and fiberglass backings live, and the 5-inch mesh sanding discs are the disc side of the sander path that moves in volume on the panel work.

Size, Thickness and Fit: Pad, Disc, and Arbor

Diameter is where the fit happens, and the rule is the one from the top of the article: pad diameter equals mandrel diameter. The sizes the range is built around are 3, 4, 5, and 6-inch discs and pads, and a 6-inch disc on a 5-inch pad overhangs the face and bites with the edge, which is how ring marks get a second cause besides the cupped pad. A 4-inch disc on a 5-inch pad wobbles in the middle instead of running even. For the larger panel and door work, the 6-inch route is the holeless pad route, where the 6-inch non-hole sanding disc sits on a solid face, and the match is the sander that takes the 6-inch mandrel, so confirm the mandrel before you order the pair. The 5-inch pair is the workhorse for the bench work, and the 5-inch mesh sanding disc is the one that moves the volume on the panel batch.

Mesh discs run their own fit logic. A mesh disc is cut from a strip, so it is a little more forgiving on a slight mandrel misalignment than a moulded disc, but the rule still holds: the pad the disc sits on has to be the diameter the sander takes. The 6-inch mesh sibling is where a heavy-duty sander and the mesh disc meet, and the 6-inch mesh sanding discs page lists the grits in the range.

The flap side has its own diameter and arbor story:

Common flap disc diameters are 100 mm, 115 mm, 125 mm, 150 mm, and 180 mm, with 115 mm and 125 mm the two that live on most angle grinders.
Most 115 mm and 125 mm flap discs take a 22.23 mm arbor, but the disc's printed arbor is the number that has to match the flange, and a mismatch resolves with a rated adapter, not with the hole ground larger.
The no-load tool speed has to sit below the disc's printed maximum working speed, and because surface speed rises with both diameter and RPM, the same grinder is fine with a 100 mm disc and too fast for a 180 mm one.

Storage and handling are part of the fit, and they are where the quiet failures start. A pad stored flat and dry keeps its face true; a pad rolled up tight or stacked under a heavy shelf comes out cupped, and the ring pattern shows up on the first panel, not the last. Check both when they land: the pad face under a straight edge, and a disc that has sat bent or crushed for a season starts cutting uneven from the first pass. If the pad face fails the straight-edge test, the disc will ring even at the coarsest grit, and the fix is the pad, not the grit.

Two failure modes live in this section and nowhere else. A pad that is off-centre on the mandrel turns the tool's orbit into a visible ring pattern, and a flap disc running past its printed maximum is the hazard that turns a routine deburr into a real injury. The habit that covers both is to read the pad, the disc, and the tool, in that order, before the job starts, with both labels in hand: the tool plate for the sander or the grinder, and the disc for the grit and the maximum working speed. If the speed is not printed on the stock you are buying, ask the supplier to confirm it before the order ships, because that number has to come from the disc, not from a guess.

Speed, Dust, and Safety

The two tool paths are two risk profiles, and the safety setup has to match the one you are running. The sander path, pad, disc, and a finishing tool that holds the part, is low speed and two-hand in the gentle sense: the tool is held to the part, the part is held to the bench, and the hazard is the dust and the loose disc more than the stored energy. The grinder path, flap disc, arbor, angle grinder, is fast and two-hand in the serious sense: the stored-energy hazard is a class up, and the guard, the PPE, and the speed check are stricter on that side for exactly that reason.

On personal protection, the U.S. baseline is the PPE general requirements at OSHA 29 CFR 1910.132: eye and face protection on both paths, and respiratory protection matched to the dust load, which on dry sanding of wood, painted surfaces, and some metals is the part most shops under-plan. For the tool side, OSHA 29 CFR 1910.244 covers the portable power tool rules that put the guard on the sander and the guard and the correct flange on the grinder, every pass, not just the first one on the bench. A practical read of how to set up and use the abrasive wheel on the grinder side is at CCOHS: Abrasive Wheels: the wheel check, the guard, the no-load speed against the printed maximum, and the seating of the disc on the flange all live in that document, and it is the one to have open when the team starts a grinder pass.

Dust gets its own line, because it is where the two paths differ most. The orbital sander is a dust machine in the way the grinder is not: the disc works against the part at a speed that throws a fine plume, and the plume goes where the extraction lets it go. Three things do most of the work: an extraction at the work, not at the wall; a filter matched to the material, because the dust of a filled panel and the dust of a cast alloy are not the same load; and a bin or bag for the waste, not a sweep into the corner. On a material that can throw silica, the control has to be the stricter one, because that is the load that turns a routine sanding pass into a long-term exposure. The plain-language side of the dust topic is at abrasive dust and airborne particulates, and the setup side is at the CCOHS document above.

Two failure modes earn their own line here. A disc riding loose on a pad that does not match its back will not just print a pattern, it can let go at speed and come off the tool, which on the orbital is a nasty surprise and on the grinder is a real injury path. And a flap disc run past its printed maximum is the one that separates at the flaps, not the face. Both are preventable, both start at the label, and the honest read is that compliant use lowers the risk, not removes it: the guard on, the PPE on, the speed under the printed maximum, and the risk is the small one. The first time a shop runs a new flap disc on a new grinder, the check is the no-load speed against the printed maximum before the first cut, because that is the number the tool and the disc have to agree on, and it is the one that is cheapest to check before the job and expensive to learn during it.

Cost, Life, and Lead Time

The cost habit on the pad side is the one that saves the most: buy on the cost per surface finished, not the cost per disc. A pad that takes a run of good discs and still holds registration is cheaper per finished panel than a cheap pad that takes a few and walks. The PSA and hook-and-loop split shows up here: the PSA disc is the cheaper consumable, and the hook-and-loop disc stays registered and swaps fast, so a shop that changes grits a lot leans hook-and-loop, and one that runs a single grit through a batch leans PSA.

On the flap side, the wear part is the flaps, and the backing outlives them. A steel-backing disc on an aggressive job runs the flaps down first, which is normal. A plastic-backing disc on a high-speed pass is more likely to heat and flex, so its life is limited by how hot the job runs rather than how hard it is pressed. If the life is short and the disc feels like it is running hot, you are probably on the wrong backing for the speed, not the wrong grit.

A useful way to compare a pad route and a flap route on the same job is cost per finished surface, not cost per unit. If the flap disc costs more but takes the whole weld and deburr pass in one run, and the pad and disc route takes three grit changes to get the same surface even, the finished surface is the number that decides.

For a steady volume line, the conversation is wholesale, not retail, and the saving lands on the per-part cost, not the sticker. The grits and pad sizes that ship fast are the common ones, and an off-grid grit, or a branded run with your own label and pack, takes longer because the grain, the backing, and the label all have to line up. The 5-inch mesh sanding discs and the 6-inch mesh sanding discs are the two that move in volume on the metal side, and the request a quotation page is where a bulk order starts. For the OEM or private-label run, the OEM & private-label service page walks through what we can put on the label and the pack, and the minimum order quantity and the lead time are the two numbers to confirm with sales before the order commits, because a branded run is a made-to-order one.

One habit pays on every line: when you quote a bulk or a branded order, the spec sheet carries the grit, the standard, the pad size and face, and the backing on the flap side. Send those, and the order is a conversation instead of a gamble. And when the cost per finished part is the number you are managing, that is the one the quotation conversation should be built around, not the price per disc.

Common Mistakes and How to Fix Them

The fixes are cheaper than the mistakes. The ones that show up most, and the move that actually moves the problem:

Wrong pad diameter ⚠️ — the pad walks or the disc overhangs, and the orbit prints on the panel. Match the pad to the mandrel, and buy the pad in the size the tool takes, not the one that looks bigger or cheaper.
Mixed attachment types 🔀 — a PSA disc on a hook-and-loop pad rides loose and burns an uneven pattern. Use the matching face, or the matching disc, and re-seat the disc when it starts to print, because the disc back and the pad face are a pair, not a choice.
Skipping grits 📏 — P80 straight to P600 leaves the P80 scratches under the finish. Add the missing steps, including the 320 grit step, and the surface clears, because the coarser scratch is the one that shows through the next coat.
Cupped or worn pad face 🔄 — the face has lost its flatness and the orbit rings the panel. Replace the pad, not just the disc, because the disc is clean and the face is the cause, and a worn face will ring even a good disc.
Flap disc past its rated speed ⚡ — the disc is flexing and running hot, and the flaps are working against the backing instead of the work. Confirm the printed maximum, keep the tool below it, and move the hot job to the fiberglass backing where the tool runs fast.
Cross-material contamination 🧊 — mild steel grit and dust on a stainless part, or resin and sawdust packed into a pad that will run panel work next. Dedicate the pad and the disc to the material, or change the grit before you cross, because the embedded particle is what shows up on the next part.
No extraction at the work 🌫️ — the dust packs the grain and the air, and the load on the team is the quiet one. Run the extraction at the work, match the filter to the material, and bag the waste, because the sweep-into-the-corner habit is how the dust ends up in the air the team breathes.
Storing pads rolled or stacked 📦 — the face cups in storage and the first panel rings. Store the pads flat and dry, on a shelf that is not under a heavy load, and the face stays true for the next run.

For each of these, the sanding disc range is where the grit and the face to reach for live, the woodworking sanding use and the metal fabrication abrasive use notes give the sequence by material, and the abrasives glossary keeps the terms straight so the shop is diagnosing the same problem. The thread through all of them is that the surface is only as good as the match you made before the job started, and most of the complaints are mismatch complaints wearing a grit's name.

FAQ

What is the difference between a sanding backing pad and a flap disc? A sanding backing pad is the mounting face that takes a disc on a sander, and a flap disc is a complete abrasive with its own backing plate that bolts onto an angle grinder through the arbor. The pad is for the sander path, the flap disc is for the grinder path, and the two do not share consumables.

Hook-and-loop or PSA, which do I buy first? If you change grits often or run a batch of different grits on one panel, the hook-and-loop is the faster swap and the one that holds registration. If you run one grit through a volume batch, the PSA disc is the cheaper consumable. The pad face has to match the disc back, which is the real constraint, and the face type is the one to confirm before the order ships.

Can I use a 6-inch disc on a smaller sander? Match the diameter to the mandrel, and a 6-inch disc on a 4-inch or 5-inch tool overhangs the pad and bites with the edge. Confirm the sander's pad size and buy the disc in that size, and the 6-inch route lives on the sander that takes the 6-inch mandrel, not on the one that does not.

Why does my orbital sander leave ring marks on the panel? Two causes show up: a pad that has cupped or lost its flatness, and a disc riding loose on a face that does not match its back. Replace the pad, re-seat the disc on the matching face, and the rings go. If they persist, the grit step is the one that is skipping, and the surface is showing the coarser grit underneath the finish.

What does the grit number on a pad or a disc mean? The number is a FEPA or ISO 848 size, and the higher the number, the finer the grain. When a label reads 320, it is the FEPA size that sits between the P240 even-out step and the P400 cleanup, and it is the step that opens the surface for the next coat. The scale is at the FEPA grit standard, and naming it in the enquiry is what keeps two suppliers from quietly shipping two different discs.

Which flap disc backing for the high-speed grinder passes? The fiberglass backing is the one for the speed and the heat, where a plastic backing would flex and a steel one wants the slower, heavier work. For the demanding deburring and weld cap work on a steady-speed grinder, the steel backing holds the flaps tight under the pressure, and the plastic backing is the cooler, lighter finishing pick for the work that is close to the surface.

How do I keep a flap disc cutting when it starts to load? Step the grit finer, change the grain if the material is packing the face, and keep the disc moving instead of pressing in. A disc that has glazed and packed is asking for a cleaner face and a lighter hand, not a coarser grit, and the fix is the one that takes the least of the disc's life.

How do I buy pads and discs in bulk, or with my own label? Send the grit, the standard, the pad size and face, and the quantity, to request a quotation, and the OEM & private-label service page walks through the label and the pack for a branded run. The minimum order quantity and the lead time are the two numbers to confirm with sales before the order commits, and the spec sheet is the one that keeps the two suppliers honest.

Before you buy

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

Confirm the tool's maximum speed or no-load speed against the disc's printed maximum working speed, and keep the tool below it on every pass, because the speed is the number that protects the operator.
Check the pad diameter against the mandrel, the disc attachment type against the pad face, and the flap disc's arbor against the flange, and use a rated adapter where one is needed, not a filed hole.
Fit and keep the guard on the grinder and the sander, every pass, because it is the first defence against a loose disc or a failing flap.
Wear eye and face protection, and run dust extraction and the right respiratory protection for the load, because the dust is the part that gets under-planned.
Name the grit standard, FEPA or ISO 848, in every enquiry, so two suppliers do not quietly ship two different discs, and keep the record with the order.
Ask for the inspection report or the certificate on the grit and the backing, and store the pads and the discs dry and away from heat, because a damp pad loses its face and a tracked dust load is the one that moves around the shop.
Follow the maker's install notes on the disc and on the pad, and check the part for heat and scratch depth on the thin and the soft material before the next coat, because the heat is what warps a thin panel under a coarse grit.

When you spec a sanding backing pad or a flap disc for a real job, send the material, the finish you are aiming for, and the tool you run, and we will pre-select the grit, the pad face, and the backing to start from. The three, together, are what the request a quotation page is built around, and they are what turn the order from a gamble into a conversation.