Best Router Bits for Dados: 9 Picks in 2026

A dado can look simple from above, yet the fit often comes down to a fraction of an inch. A groove cut for nominal 3/4-inch plywood may be too loose for the actual sheet in your shop, while a bit sized for undersized plywood can produce a snug joint with less fiddling at the router table. That is why shoppers looking for the best router bits for dados often compare matched sets rather than grabbing the first straight bit they see.

The main traps are easy to miss. A 1/2-inch shank will not fit a 1/4-inch collet, a carbide-tipped bit is constructed differently from a solid carbide bit, and a general-purpose straight bit may not offer the sizes needed for common plywood. Cutting diameter, shank size, flute design, cutting height, and supported materials all matter. A cabinet builder may prioritize matched plywood dado sizes, while a hobbyist may want a broad selection of diameters for grooves, rabbets, and joinery.

The Whiteside 470 Plywood Dado Set is the strongest overall fit because it combines three plywood-focused sizes with a 1/2-inch shank and a mix of solid carbide and carbide-tipped cutters. Other picks make more sense for 1/4-inch routers, CNC work, general straight cuts, or a single specialized bit, so the comparison below keeps those differences visible.

Quick Answer

• Best Overall: Whiteside 470 Plywood Dado Set for matched cuts aimed at common plywood thicknesses and a 1/2-inch collet.
• Best for 1/4-Inch Routers: SICWOOD Six-Piece Straight Router Bit Set for its range of six diameters and documented 1/4-inch shank.
• Best for CNC and Specialty Plywood: Aoranto Undersize Plywood Dado Bits, 1/4-Inch Shank for its four plywood-oriented diameters and listed CNC compatibility.
• Best Single Bit: Freud 16-520 Mortising Bit for buyers who need one 3/4-inch bit for dados, grooves, or hinge mortises.

Best Router Bits for Dados Comparison Table

Use the detailed reviews to match the cutter dimensions and shank size to your router, stock, and joinery plan.

1. Whiteside 470 Plywood Dado Set | Best Overall

The Whiteside 470 is built around a very specific woodworking headache: plywood rarely matches the nominal number printed on the sheet. Its three cutters are identified for 1/4-inch, 1/2-inch, and 3/4-inch plywood, with diameters of 7/32, 31/64, and 23/32 inch. That sizing makes the set especially relevant for cabinet shelves, partitions, and casework where a loose dado can leave a joint rattling instead of snug.

The set uses a 1/2-inch collet and combines a solid carbide 7/32-inch cutter with two carbide-tipped bits. The steel bodies are described as rigid, while the cutting edges are intended for plywood dado work. A cabinetmaker with a 1/2-inch router can move between common sheet thicknesses without buying three unrelated bits, which is the practical appeal here. Buyers using a 1/4-inch router should stop at the shank specification, since this set is not presented as a 1/4-inch-collet option.

Pros

• Includes three cutters matched to 1/4, 1/2, and 3/4-inch plywood applications.
• Provides a 7/32-inch solid carbide cutter for 1/4-inch plywood.
• Uses carbide-tipped cutters for the 31/64 and 23/32-inch sizes.
• Uses 1/2-inch shanks for routers equipped with a matching collet.
• Focuses specifically on plywood dado sizing rather than general-purpose profiles.

Cons

• Requires a 1/2-inch collet, so it is unsuitable for a 1/4-inch-only router.
• The set offers three plywood sizes rather than a broad range of general groove diameters.

This is the most sensible package for a 1/2-inch router owner cutting cabinet-grade plywood and wanting the sizes organized around common sheet thicknesses. A 1/4-inch router user, or someone working mainly in solid wood with unusual groove dimensions, will find a better fit elsewhere in this list.

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2. SICWOOD Six-Piece Straight Router Bit Set | Best for 1/4-Inch Routers

SICWOOD takes the broad-selection route. The set includes six double-flute straight bits measuring 1/4, 5/16, 3/8, 1/2, 5/8, and 3/4 inch in cutting diameter. That spread is useful when a project moves from a narrow shelf groove to a wider dado, and it gives a 1/4-inch router owner considerably more flexibility than a single-bit purchase.

The listed cutting height is 13/16 inch, and the bits use 1/4-inch shanks. The product information identifies carbide-tipped construction with C3 micro-grain tungsten carbide blades and lists CNC machines, desktop installations, and handheld routers as compatible equipment categories. It also names chipboard, MDF, plywood, and hardwood among the supported materials. A hobbyist making bookcase dados one weekend and drawer grooves the next will appreciate the range, although matching a specific plywood thickness still requires checking the actual bit diameter.

Pros

• Includes six distinct cutting diameters from 1/4 to 3/4 inch.
• Uses documented 1/4-inch shanks for compatible routers and collets.
• Employs double-flute straight-bit geometry.
• Lists CNC, desktop, and handheld router use.
• Identifies plywood, MDF, chipboard, and hardwood as applicable materials.

Cons

• The set is carbide-tipped rather than identified as solid carbide.
• The wide size range does not specifically match the three common plywood thicknesses as closely as a dedicated dado set.

SICWOOD is a practical pick for a 1/4-inch router owner who wants one organized set for dados, grooves, and rabbets. Choose a plywood-specific set instead if joint fit around nominal sheet sizes is the central concern.

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3. YONICO 14323 Undersize Plywood Dado Set, 1/2-Inch Shank | Best for 1/2-Inch Plywood Joinery

YONICO’s 14323 set is aimed at the same underlying problem as the Whiteside set: dressed plywood needs a groove sized to the sheet that is actually in your hands. The listing describes three bits for undersize plywood dados and straight cuts, making this a more focused purchase than a mixed profile kit. That focus suits cabinet boxes, utility shelving, and other projects where a consistent panel fit matters more than a large assortment.

These bits use 1/2-inch shanks and are listed for CNC, table-mounted, and handheld routers. The product information identifies C3 micro-grain tungsten carbide blades and silver induction brazing. The supplied data does not state the individual cutting diameters, so buyers should verify the size chart before ordering if a particular panel thickness is critical. That missing detail keeps this set below the Whiteside option, but the documented machine range gives it a useful place for larger router setups.

Pros

• Includes three bits intended for undersized plywood dados and straight cuts.
• Uses 1/2-inch shanks for compatible router collets.
• Lists CNC, table-mounted, and handheld router use.
• Uses stated C3 micro-grain tungsten carbide blades.
• Features silver induction brazing according to the product information.

Cons

• The supplied specifications do not identify the individual cutting diameters.
• It requires a 1/2-inch collet and does not suit a 1/4-inch-only router.

This set fits buyers who already know they want an undersized plywood dado kit for a 1/2-inch router and can confirm the listed dimensions before purchase. If the exact cutter sizes need to be visible at a glance, the Whiteside or Aoranto sets provide clearer dimensional information.

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4. Aoranto Undersize Plywood Dado Bits, 1/4-Inch Shank | Best for 1/4-Inch CNC and Router Work

Aoranto’s four-piece set is unusually direct about undersized plywood. The diameters are 7/32, 11/32, 15/32, and 23/32 inch, covering several common sheet-good applications in a compact group. That makes it interesting for a 1/4-inch router user cutting shelves or partitions, especially where a nominal measurement would leave too much play in the joint.

The set is identified as 1/4-inch shank and is listed for engraving machines, table-mounted routers, and CNC machining centers. The product data also names laminate, melamine, melamine particle board, MDF, veneered plywood, and wood. Its stated construction includes solid carbide and a specific AT03 ultra-fine tungsten carbide grain description. Those details are more technical than the basic bit sets, but the critical practical check remains simple: confirm that your collet accepts the 1/4-inch shank and that the selected diameter matches the material thickness.

Pros

• Includes four clearly listed undersized plywood diameters.
• Uses 1/4-inch shanks for compatible smaller routers and CNC equipment.
• Identifies solid carbide construction in the supplied specifications.
• Lists laminate, melamine, MDF, veneered plywood, and wood applications.
• Names engraving machines, table-mounted routers, and CNC machining centers.

Cons

• The 1/4-inch shank limits use to compatible collets and toolholders.
• The set is specialized for straight dado work rather than a broad selection of router profiles.

Pick this Aoranto set when undersized plywood fit and 1/4-inch compatibility matter more than general-purpose versatility. The 1/2-inch Aoranto version covers the same listed diameters for a different router setup, so the collet should decide between them.

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5. HILTEX Four-Piece Straight Router Bit Set | Best for General Dado and Groove Work

HILTEX keeps the selection compact, with four double-flute straight bits measuring 1/4, 5/16, 3/8, and 1/2 inch. That group covers many everyday shelf grooves, drawer channels, and decorative inlay cuts without filling a case with sizes that may sit unused. Each bit has a 1/4-inch shank, which makes the set relevant to common compact routers and compatible CNC equipment.

The listing identifies YG8 tungsten carbide cutting edges on hardened number 45 carbon steel bodies and names high-density urethane, laminate, MDF, veneered plywood, softwoods, and hardwoods as supported materials. Each bit comes in a labeled plastic case, and the shanks include a laser-etched minimum insertion line. Those storage and setup details are handy when a small router cabinet turns into a jumble of similar-looking cutters, while the double-flute layout is suited to the straight-cut tasks named by the product.

Pros

• Includes four useful straight-bit diameters from 1/4 to 1/2 inch.
• Uses 1/4-inch shanks with double-flute cutting geometry.
• Lists dados, grooves, rabbets, and decorative inlay channels.
• Identifies use with MDF, plywood, laminate, hardwood, and softwood.
• Includes labeled storage cases and a minimum insertion mark on each shank.

Cons

• The size range does not include the 5/8 or 3/4-inch diameters found in the SICWOOD set.
• The bits are carbide-tipped on steel bodies rather than identified as solid carbide.

HILTEX suits the buyer who wants a small, labeled 1/4-inch set for ordinary woodworking joinery. For plywood-specific sizing, the Aoranto set is more targeted, while SICWOOD offers a wider diameter range.

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6. YONICO 14011q Straight Router Bit | Best Single-Bit Option

A set is convenient until the other bits spend years untouched in a drawer. YONICO’s 14011q is a single straight bit for buyers who already know the groove size they need. The supplied information identifies a 9/16-inch cutting diameter and a 1-inch cutting length, making it a focused option for dado grooves and general straight-cut work.

The bit uses a 1/4-inch shank and double-flute construction, with C3 micro-grain tungsten carbide blades and silver induction brazing listed in the product details. It is identified for CNC, table-mounted, and handheld routers. Someone repairing one cabinet, adding a specific shelf channel, or replacing a worn cutter may prefer this targeted purchase over a multi-bit kit, provided 9/16 inch is the correct width for the project.

Pros

• Provides a documented 9/16-inch cutting diameter.
• Offers a listed 1-inch cutting length.
• Uses a 1/4-inch shank for compatible routers and collets.
• Uses double-flute straight-bit geometry for dados and straight cuts.
• Lists C3 micro-grain tungsten carbide blades and silver induction brazing.

Cons

• Only one cutting diameter is included.
• The 1/4-inch shank excludes routers limited to 1/2-inch collets without a suitable adapter or compatible setup.

This YONICO bit makes sense for a precise replacement or a one-off 9/16-inch dado job. A set is the better route for a cabinet project with several panel thicknesses or changing groove widths.

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7. Aoranto Undersize Plywood Dado Bits, 1/2-Inch Shank | Best 1/2-Inch-Shank Plywood Set

This Aoranto set mirrors the four undersized plywood diameters of its 1/4-inch-shank counterpart, but the shank changes to 1/2 inch. The cutters measure 7/32, 11/32, 15/32, and 23/32 inch, so the appeal is clear for a larger router setup that still needs the same plywood-focused sizing. A cabinet builder can select the set based on the router collet rather than compromising on the desired diameters.

The product information lists solid carbide construction, AT03 ultra-fine tungsten carbide grain, and use with laminate, melamine, melamine particle board, MDF, veneered plywood, and wood. CNC machining centers and table-mounted routers are included among the listed machines. The supplied specifications do not establish that the 1/2-inch version performs differently from the 1/4-inch version, so the meaningful distinction is compatibility and setup rigidity, not a claimed cutting advantage.

Pros

• Includes four clearly stated diameters for undersized plywood dados.
• Uses 1/2-inch shanks for compatible routers and CNC equipment.
• Identifies solid carbide construction.
• Lists multiple sheet-good materials, including MDF, laminate, and melamine.
• Provides the same useful diameter range as the 1/4-inch Aoranto version for a different collet size.

Cons

• Requires a 1/2-inch collet and will not fit a 1/4-inch-only router.
• Its specialized diameter range is less useful for buyers seeking broad general-purpose profile work.

Select this version when your router or CNC setup accepts 1/2-inch shanks and you want the listed undersized plywood dimensions. Buyers with a smaller router should choose the 1/4-inch version instead, since the cutting diameters alone do not resolve shank compatibility.

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8. Freud 16-520 Mortising Bit | Best 3/4-Inch Bit

The Freud 16-520 is a single 3/4-inch bit aimed at buyers who do not need a full assortment. Its published description connects the bit with hinge and hardware mortises, grooves, and dadoes, giving it a broader joinery role than a cutter marketed only for plywood. For a furniture project that needs a 3/4-inch channel and occasional mortising work, one dedicated bit may be more sensible than a set of smaller diameters.

This model uses a 1/2-inch shank and is listed for composition materials, plywoods, hardwoods, and softwoods. The supported equipment categories include CNC and other automatic routers, handheld routers, and table-mounted portable routers. The supplied information identifies Perma-SHIELD coating, but it does not provide a broader range of cutting diameters. That makes the 16-520 useful for a defined 3/4-inch task, while a multi-bit set is better for varied cabinet construction.

Pros

• Provides a documented 3/4-inch cutting diameter.
• Uses a 1/2-inch shank for compatible router setups.
• Lists dados, grooves, and hinge or hardware mortises.
• Identifies plywood, hardwood, softwood, and composition materials.
• Includes a stated Perma-SHIELD coating.

Cons

• Offers only one cutting diameter rather than a range of dado sizes.
• Requires a 1/2-inch collet and is unsuitable for a 1/4-inch-only router.

The Freud is a good fit for a 3/4-inch dado or mortising task where the machine accepts a 1/2-inch shank. It is less practical as the only bit for a cabinet shop that regularly cuts several plywood thicknesses.

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9. Freud 04-129 Double-Flute Straight Bit | Best for 7/16-Inch Grooves

The Freud 04-129 fills a narrower slot than the larger sets. It has a 7/16-inch diameter, a 1-inch carbide height, and a 1/4-inch shank, making it useful for a specific groove or dado dimension rather than a broad plywood program. A craftsperson working from a measured plan may appreciate that direct match, especially when a 1/2-inch bit would leave too much clearance.

The bit has two cutters and an overall length of 2-1/2 inches. The product information names solid wood, plywood, and composites as suitable materials and lists CNC, handheld, and table-mounted routers. Its Tico Hi-Density Carbide construction is also identified. Since this is a single bit, the key buying question is whether 7/16 inch is the required groove width and whether the router accepts its 1/4-inch shank.

Pros

• Provides a documented 7/16-inch overall diameter.
• Uses a 1/4-inch shank for compatible router collets.
• Has two cutters in a double-flute design.
• Lists a 1-inch carbide height and 2-1/2-inch overall length.
• Is identified for solid wood, plywood, composites, CNC, handheld, and table-mounted routers.

Cons

• Only one 7/16-inch diameter is included.
• The 1/4-inch shank limits compatibility with routers that accept only 1/2-inch shanks.

This Freud bit is for a measured 7/16-inch job, such as a particular shelf groove or joinery detail. Buyers still deciding among several dado widths will get more flexibility from SICWOOD, HILTEX, or one of the plywood-focused sets.

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Buying Guide

Match the Shank to the Collet

Shank size is the first filter, before carbide construction or diameter. The Whiteside, YONICO 14323, Aoranto 1/2-inch, and Freud 16-520 options use 1/2-inch shanks. SICWOOD, Aoranto 1/4-inch, HILTEX, YONICO 14011q, and Freud 04-129 use 1/4-inch shanks. A bit that matches the desired groove width is still unusable if the router cannot hold its shank securely.

Choose Plywood-Specific Sizing for Cabinet Work

Nominal plywood labels do not always describe the sheet’s finished thickness. Dedicated sets such as Whiteside, YONICO 14323, and Aoranto list undersized or plywood-oriented dado sizes. That approach is more targeted than buying a generic 1/2-inch or 3/4-inch straight bit and hoping the joint fits. Measure the material you will actually use, then compare it with the documented cutter diameter.

Decide Between a Set and a Single Bit

A set makes sense for a cabinet project involving several panel sizes or groove widths. SICWOOD provides six diameters, while HILTEX offers four common sizes. A single bit such as the Freud 16-520 or YONICO 14011q is more focused. It can be the cleaner purchase for a repair, a measured replacement, or a project built around one repeated dimension.

Understand Carbide-Tipped and Solid Carbide Construction

The products here use different constructions. Whiteside combines one solid carbide cutter with two carbide-tipped bits. SICWOOD and HILTEX identify carbide-tipped designs, while Aoranto identifies solid carbide construction. These descriptions should remain separate in your comparison. Carbide-tipped does not mean the entire bit is solid carbide, and a product’s construction alone does not establish a guaranteed service life or cutting result.

Check the Intended Machine

Several listings name handheld routers, table-mounted routers, CNC machines, or combinations of those machines. That information is useful, but it does not replace checking the router manual, collet size, cutter clearance, and machine restrictions. A CNC listing should not automatically be read as approval for every handheld setup, and a handheld-router listing should not be treated as a universal machine guarantee.

Match Cutting Diameter to the Joint

A dado should match the part it receives. A 7/16-inch bit, a 9/16-inch bit, and a 3/4-inch bit create very different joints, even when their profiles look similar in a storage case. Measure the shelf, divider, or panel and account for the actual stock dimension. Sets provide flexibility, but the final decision still comes down to the required groove width and depth for the project.

The joinery guide explains dado width and actual panel thickness, including when an adjustable-width approach is more useful than nominal size matching.

Best Router Bits for Dados FAQ

What router bit is best for plywood dados?

A plywood-specific set is usually the most direct match because it provides cutters intended around common sheet thicknesses. The Whiteside 470 includes sizes for 1/4, 1/2, and 3/4-inch plywood, while the Aoranto sets list four undersized plywood diameters. Confirm the shank size before choosing between them.

Can a 1/2-inch-shank bit fit a 1/4-inch router?

No. A 1/2-inch shank requires a compatible 1/2-inch collet or toolholder. The router’s collet size should be checked before purchase. A 1/4-inch router owner should look at options such as SICWOOD, HILTEX, Aoranto’s 1/4-inch set, YONICO 14011q, or Freud 04-129.

Are carbide-tipped router bits the same as solid carbide bits?

No. A carbide-tipped bit has carbide cutting edges attached to another body material, while a solid carbide bit is identified as carbide through the cutter body. The Whiteside set includes both types, and the distinction should be preserved when comparing construction.

What size bit should be used for a 3/4-inch plywood dado?

The correct size depends on the actual thickness of the plywood and the fit you need. The Whiteside set lists a 23/32-inch cutter for 3/4-inch plywood, while the Aoranto sets also list a 23/32-inch diameter among their undersized plywood sizes. Measure the sheet rather than relying on the nominal label alone.

Are straight router bits suitable for MDF and hardwood?

Several products in this roundup list MDF, hardwood, softwood, or plywood among their applicable materials. SICWOOD, HILTEX, Freud 16-520, and Freud 04-129 provide those types of material information. Always follow the router and bit manufacturer’s operating guidance for the specific machine and workpiece.

Should I buy a dado set or one straight bit?

Buy a set if your project includes several groove widths or plywood thicknesses. A single bit is more sensible for a defined repair or a repeated dimension. The YONICO 14011q and Freud 04-129 are focused single-bit options, while SICWOOD and the plywood sets provide a broader selection.

Can these router bits be used in a CNC machine?

Several listings identify CNC use, including SICWOOD, both Aoranto sets, both YONICO options, HILTEX, and the Freud models. Compatibility still depends on the CNC machine, collet, toolholder, and the specific bit dimensions. The product listing should not replace the machine manufacturer’s requirements.

What is the main mistake to avoid when buying dado bits?

Buying by nominal width alone is the common mistake. Shank size, actual plywood thickness, cutting diameter, and machine compatibility all need to agree. A beautifully matched 3/4-inch dado bit is of little use if the router accepts only a 1/4-inch shank or the sheet measures differently from its label.

Final Verdict

The Whiteside 470 Plywood Dado Set is the strongest overall recommendation for this category because its three documented cutters are tied directly to common plywood applications, including 7/32, 31/64, and 23/32-inch diameters. Its 1/2-inch shank is the central limitation, but for a compatible router it offers a more purposeful path to plywood joinery than a random assortment of straight bits. The solid carbide and carbide-tipped construction should be understood accurately, without treating the two designs as identical.

For 1/4-inch routers, SICWOOD provides the broadest diameter range, while Aoranto is the more focused choice for undersized plywood sizing. HILTEX keeps general dado work compact, and the Freud and YONICO single-bit options suit measured groove widths or specific mortising tasks. Match the cutter diameter to the stock, verify the shank against the collet, and select the set that fits the work rather than chasing the largest assortment.